Scubapro twin jet split fins

"Charlie Hammond" <hammond@not@peek.ssr.hp.com> wrote in message
news:h5o3c.512$ky1.14@news.cpqcorp.net...
> In article <c2jb7m$lq2$1@agate.berkeley.edu>,
> jor@soda.csua.berkeley.edu (Jason O'Rourke) writes:
> >Charlie Hammond <hammond@not@peek.ssr.hp.com> wrote:
> >> Efficiency and reduced effort is achieved when using large stiff
> >> fins simply by kicking more slowly. Even divers who are not well
> >> muscled or not in the best shape can benefit from this
> >> efficiency. Just s_l_o_w down your kick rate.
> >
> >This does require some muscle fitness - going low cadence at a high gear
> >ratio is an anaerobic activity and is not sustainable.
>
> I think we have a differenet understanding of how slow is slow.
> If it is not sustainable then either:
>
> (1) you're going too fast; slow down, or
>
> (2) your level of fitness is entierly too low for
> SCUBA diving activity.
>
> (NOTE: Muscle efficienty will increase with fitness level.)
>
This is why freedivers use such incredibly long and stiff fin blades.
Freedivers however move like they've got all day underwater.