Diver Mag-deepest dive last. Good/Bad?

>I guess Diver did not have much material.
> This was a poor article saying not very much.
> First they say deepest last is bad,then that there is no evidence to show
> it.
> Then they seem to be upset that people are ignoring the
> "Dive Deepest first dive " "rule"

Its a while since I read that, but I seem to remember thinking that an
obvious and important point was missed. I often ignore the rule when i'm
doing things like training in Stoney, where the first dive will start
shallow, and get deeper as their experience grows. Generally that would
often mean a 10m dive first, and a 20m dive later. Combined with the fact I
could be teaching more than one buddy pair, my dives just go to the depths
required. Yes I ignore the rules, but as i'm nowhere near deco and only in
20m I don't see it as a problem.
When i'm doing 'real' diving, I (and everyone else I know) will generally
follow the "rule", and unless we're just doing 10m pootles then the first
dive would always be the deeper of the two we did that day.
I may have just forgotten the article, but i'm fairly sure they ignored the
fact that not all dives are the same - a 6m dip followed by 15mins at 20m is
very different to doing a 25m deco dive followed by a 40m dive later in the
day.

David

>I guess Diver did not have much material.
> This was a poor article saying not very much.
> First they say deepest last is bad,then that there is no evidence to show
> it.
> Then they seem to be upset that people are ignoring the
> "Dive Deepest first dive " "rule"

Its a while since I read that, but I seem to remember thinking that an
obvious and important point was missed. I often ignore the rule when i'm
doing things like training in Stoney, where the first dive will start
shallow, and get deeper as their experience grows. Generally that would
often mean a 10m dive first, and a 20m dive later. Combined with the fact I
could be teaching more than one buddy pair, my dives just go to the depths
required. Yes I ignore the rules, but as i'm nowhere near deco and only in
20m I don't see it as a problem.
When i'm doing 'real' diving, I (and everyone else I know) will generally
follow the "rule", and unless we're just doing 10m pootles then the first
dive would always be the deeper of the two we did that day.
I may have just forgotten the article, but i'm fairly sure they ignored the
fact that not all dives are the same - a 6m dip followed by 15mins at 20m is
very different to doing a 25m deco dive followed by a 40m dive later in the
day.

David

>I guess Diver did not have much material.
> This was a poor article saying not very much.
> First they say deepest last is bad,then that there is no evidence to show
> it.
> Then they seem to be upset that people are ignoring the
> "Dive Deepest first dive " "rule"

Its a while since I read that, but I seem to remember thinking that an
obvious and important point was missed. I often ignore the rule when i'm
doing things like training in Stoney, where the first dive will start
shallow, and get deeper as their experience grows. Generally that would
often mean a 10m dive first, and a 20m dive later. Combined with the fact I
could be teaching more than one buddy pair, my dives just go to the depths
required. Yes I ignore the rules, but as i'm nowhere near deco and only in
20m I don't see it as a problem.
When i'm doing 'real' diving, I (and everyone else I know) will generally
follow the "rule", and unless we're just doing 10m pootles then the first
dive would always be the deeper of the two we did that day.
I may have just forgotten the article, but i'm fairly sure they ignored the
fact that not all dives are the same - a 6m dip followed by 15mins at 20m is
very different to doing a 25m deco dive followed by a 40m dive later in the
day.

David

>I guess Diver did not have much material.
> This was a poor article saying not very much.
> First they say deepest last is bad,then that there is no evidence to show
> it.
> Then they seem to be upset that people are ignoring the
> "Dive Deepest first dive " "rule"

Its a while since I read that, but I seem to remember thinking that an
obvious and important point was missed. I often ignore the rule when i'm
doing things like training in Stoney, where the first dive will start
shallow, and get deeper as their experience grows. Generally that would
often mean a 10m dive first, and a 20m dive later. Combined with the fact I
could be teaching more than one buddy pair, my dives just go to the depths
required. Yes I ignore the rules, but as i'm nowhere near deco and only in
20m I don't see it as a problem.
When i'm doing 'real' diving, I (and everyone else I know) will generally
follow the "rule", and unless we're just doing 10m pootles then the first
dive would always be the deeper of the two we did that day.
I may have just forgotten the article, but i'm fairly sure they ignored the
fact that not all dives are the same - a 6m dip followed by 15mins at 20m is
very different to doing a 25m deco dive followed by a 40m dive later in the
day.

David

>I guess Diver did not have much material.
> This was a poor article saying not very much.
> First they say deepest last is bad,then that there is no evidence to show
> it.
> Then they seem to be upset that people are ignoring the
> "Dive Deepest first dive " "rule"

Its a while since I read that, but I seem to remember thinking that an
obvious and important point was missed. I often ignore the rule when i'm
doing things like training in Stoney, where the first dive will start
shallow, and get deeper as their experience grows. Generally that would
often mean a 10m dive first, and a 20m dive later. Combined with the fact I
could be teaching more than one buddy pair, my dives just go to the depths
required. Yes I ignore the rules, but as i'm nowhere near deco and only in
20m I don't see it as a problem.
When i'm doing 'real' diving, I (and everyone else I know) will generally
follow the "rule", and unless we're just doing 10m pootles then the first
dive would always be the deeper of the two we did that day.
I may have just forgotten the article, but i'm fairly sure they ignored the
fact that not all dives are the same - a 6m dip followed by 15mins at 20m is
very different to doing a 25m deco dive followed by a 40m dive later in the
day.

David

>I guess Diver did not have much material.
> This was a poor article saying not very much.
> First they say deepest last is bad,then that there is no evidence to show
> it.
> Then they seem to be upset that people are ignoring the
> "Dive Deepest first dive " "rule"

Its a while since I read that, but I seem to remember thinking that an
obvious and important point was missed. I often ignore the rule when i'm
doing things like training in Stoney, where the first dive will start
shallow, and get deeper as their experience grows. Generally that would
often mean a 10m dive first, and a 20m dive later. Combined with the fact I
could be teaching more than one buddy pair, my dives just go to the depths
required. Yes I ignore the rules, but as i'm nowhere near deco and only in
20m I don't see it as a problem.
When i'm doing 'real' diving, I (and everyone else I know) will generally
follow the "rule", and unless we're just doing 10m pootles then the first
dive would always be the deeper of the two we did that day.
I may have just forgotten the article, but i'm fairly sure they ignored the
fact that not all dives are the same - a 6m dip followed by 15mins at 20m is
very different to doing a 25m deco dive followed by a 40m dive later in the
day.

David

"David Walker" <stuff@scuby.co.uk> wrote in message
news:cuodvs$38n$1@wisteria.csv.warwick.ac.uk...
> >I guess Diver did not have much material.
>> This was a poor article saying not very much.
>> First they say deepest last is bad,then that there is no evidence to show
>> it.
>> Then they seem to be upset that people are ignoring the
>> "Dive Deepest first dive " "rule"
>
> Its a while since I read that, but I seem to remember thinking that an
> obvious and important point was missed. I often ignore the rule when i'm
> doing things like training in Stoney, where the first dive will start
> shallow, and get deeper as their experience grows. Generally that would
> often mean a 10m dive first, and a 20m dive later. Combined with the fact
> I could be teaching more than one buddy pair, my dives just go to the
> depths required. Yes I ignore the rules, but as i'm nowhere near deco and
> only in 20m I don't see it as a problem.
> When i'm doing 'real' diving, I (and everyone else I know) will generally
> follow the "rule", and unless we're just doing 10m pootles then the first
> dive would always be the deeper of the two we did that day.
> I may have just forgotten the article, but i'm fairly sure they ignored
> the fact that not all dives are the same - a 6m dip followed by 15mins at
> 20m is very different to doing a 25m deco dive followed by a 40m dive
> later in the day.

One thing that discredits PADI about the "deepest dive first" rule is that
there is more than max depth to do with nitrogen loading, but this is never
mentioned nor apparently even considered when the "rules" are laid down..

My first dive could take me to (for example) 24m, straight down a shot line.
Having spent 2 mins at that depth I ascend and spend the rest of a 24min
dive at 8m.

After an hour I'm in the water again. Careful not to exceed my previous
depth, I go no further than 18m deep. I spend the entire 30 mins of my dive
at that depth, but for 3 mins on the recommended 5m stop.

It would appear I have not done any of this reverse profile business as the
max depth on my second dive of the day was shallower than the max depth on
my first. However, my second dive was of longer duration than my first AND
it was at greater AVERAGE depth - 16.7m, as opposed to 9.3m. Yet this is a
profile PADI would approve of, despite that my Nitrogen absorbtion would
have been greater during my second dive than during my first.

Sort of makes a nonsense of "deepest dive first". There must be LOADS of
daily profiles that in effect do as I have described - and so what? If it
were that important, something would have been spotted by now surely, given
the increasing number of folk taking the plunge?

Ken

"David Walker" <stuff@scuby.co.uk> wrote in message
news:cuodvs$38n$1@wisteria.csv.warwick.ac.uk...
> >I guess Diver did not have much material.
>> This was a poor article saying not very much.
>> First they say deepest last is bad,then that there is no evidence to show
>> it.
>> Then they seem to be upset that people are ignoring the
>> "Dive Deepest first dive " "rule"
>
> Its a while since I read that, but I seem to remember thinking that an
> obvious and important point was missed. I often ignore the rule when i'm
> doing things like training in Stoney, where the first dive will start
> shallow, and get deeper as their experience grows. Generally that would
> often mean a 10m dive first, and a 20m dive later. Combined with the fact
> I could be teaching more than one buddy pair, my dives just go to the
> depths required. Yes I ignore the rules, but as i'm nowhere near deco and
> only in 20m I don't see it as a problem.
> When i'm doing 'real' diving, I (and everyone else I know) will generally
> follow the "rule", and unless we're just doing 10m pootles then the first
> dive would always be the deeper of the two we did that day.
> I may have just forgotten the article, but i'm fairly sure they ignored
> the fact that not all dives are the same - a 6m dip followed by 15mins at
> 20m is very different to doing a 25m deco dive followed by a 40m dive
> later in the day.

One thing that discredits PADI about the "deepest dive first" rule is that
there is more than max depth to do with nitrogen loading, but this is never
mentioned nor apparently even considered when the "rules" are laid down..

My first dive could take me to (for example) 24m, straight down a shot line.
Having spent 2 mins at that depth I ascend and spend the rest of a 24min
dive at 8m.

After an hour I'm in the water again. Careful not to exceed my previous
depth, I go no further than 18m deep. I spend the entire 30 mins of my dive
at that depth, but for 3 mins on the recommended 5m stop.

It would appear I have not done any of this reverse profile business as the
max depth on my second dive of the day was shallower than the max depth on
my first. However, my second dive was of longer duration than my first AND
it was at greater AVERAGE depth - 16.7m, as opposed to 9.3m. Yet this is a
profile PADI would approve of, despite that my Nitrogen absorbtion would
have been greater during my second dive than during my first.

Sort of makes a nonsense of "deepest dive first". There must be LOADS of
daily profiles that in effect do as I have described - and so what? If it
were that important, something would have been spotted by now surely, given
the increasing number of folk taking the plunge?

Ken

"David Walker" <stuff@scuby.co.uk> wrote in message
news:cuodvs$38n$1@wisteria.csv.warwick.ac.uk...
> >I guess Diver did not have much material.
>> This was a poor article saying not very much.
>> First they say deepest last is bad,then that there is no evidence to show
>> it.
>> Then they seem to be upset that people are ignoring the
>> "Dive Deepest first dive " "rule"
>
> Its a while since I read that, but I seem to remember thinking that an
> obvious and important point was missed. I often ignore the rule when i'm
> doing things like training in Stoney, where the first dive will start
> shallow, and get deeper as their experience grows. Generally that would
> often mean a 10m dive first, and a 20m dive later. Combined with the fact
> I could be teaching more than one buddy pair, my dives just go to the
> depths required. Yes I ignore the rules, but as i'm nowhere near deco and
> only in 20m I don't see it as a problem.
> When i'm doing 'real' diving, I (and everyone else I know) will generally
> follow the "rule", and unless we're just doing 10m pootles then the first
> dive would always be the deeper of the two we did that day.
> I may have just forgotten the article, but i'm fairly sure they ignored
> the fact that not all dives are the same - a 6m dip followed by 15mins at
> 20m is very different to doing a 25m deco dive followed by a 40m dive
> later in the day.

One thing that discredits PADI about the "deepest dive first" rule is that
there is more than max depth to do with nitrogen loading, but this is never
mentioned nor apparently even considered when the "rules" are laid down..

My first dive could take me to (for example) 24m, straight down a shot line.
Having spent 2 mins at that depth I ascend and spend the rest of a 24min
dive at 8m.

After an hour I'm in the water again. Careful not to exceed my previous
depth, I go no further than 18m deep. I spend the entire 30 mins of my dive
at that depth, but for 3 mins on the recommended 5m stop.

It would appear I have not done any of this reverse profile business as the
max depth on my second dive of the day was shallower than the max depth on
my first. However, my second dive was of longer duration than my first AND
it was at greater AVERAGE depth - 16.7m, as opposed to 9.3m. Yet this is a
profile PADI would approve of, despite that my Nitrogen absorbtion would
have been greater during my second dive than during my first.

Sort of makes a nonsense of "deepest dive first". There must be LOADS of
daily profiles that in effect do as I have described - and so what? If it
were that important, something would have been spotted by now surely, given
the increasing number of folk taking the plunge?

Ken

"David Walker" <stuff@scuby.co.uk> wrote in message
news:cuodvs$38n$1@wisteria.csv.warwick.ac.uk...
> >I guess Diver did not have much material.
>> This was a poor article saying not very much.
>> First they say deepest last is bad,then that there is no evidence to show
>> it.
>> Then they seem to be upset that people are ignoring the
>> "Dive Deepest first dive " "rule"
>
> Its a while since I read that, but I seem to remember thinking that an
> obvious and important point was missed. I often ignore the rule when i'm
> doing things like training in Stoney, where the first dive will start
> shallow, and get deeper as their experience grows. Generally that would
> often mean a 10m dive first, and a 20m dive later. Combined with the fact
> I could be teaching more than one buddy pair, my dives just go to the
> depths required. Yes I ignore the rules, but as i'm nowhere near deco and
> only in 20m I don't see it as a problem.
> When i'm doing 'real' diving, I (and everyone else I know) will generally
> follow the "rule", and unless we're just doing 10m pootles then the first
> dive would always be the deeper of the two we did that day.
> I may have just forgotten the article, but i'm fairly sure they ignored
> the fact that not all dives are the same - a 6m dip followed by 15mins at
> 20m is very different to doing a 25m deco dive followed by a 40m dive
> later in the day.

One thing that discredits PADI about the "deepest dive first" rule is that
there is more than max depth to do with nitrogen loading, but this is never
mentioned nor apparently even considered when the "rules" are laid down..

My first dive could take me to (for example) 24m, straight down a shot line.
Having spent 2 mins at that depth I ascend and spend the rest of a 24min
dive at 8m.

After an hour I'm in the water again. Careful not to exceed my previous
depth, I go no further than 18m deep. I spend the entire 30 mins of my dive
at that depth, but for 3 mins on the recommended 5m stop.

It would appear I have not done any of this reverse profile business as the
max depth on my second dive of the day was shallower than the max depth on
my first. However, my second dive was of longer duration than my first AND
it was at greater AVERAGE depth - 16.7m, as opposed to 9.3m. Yet this is a
profile PADI would approve of, despite that my Nitrogen absorbtion would
have been greater during my second dive than during my first.

Sort of makes a nonsense of "deepest dive first". There must be LOADS of
daily profiles that in effect do as I have described - and so what? If it
were that important, something would have been spotted by now surely, given
the increasing number of folk taking the plunge?

Ken