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Davy,
Atomic splits with the shoes are used with excellent success by
underwater rugby players . They seem more than able to replace the out
of production Mares Plana Plus. While this may seem a big
recommendation, its appliance to technical diving may just be a  typical
case of violation of model theory. Latter predicts certain thoughts
before doing a comparison. In this case these thoughts center around
scaling, streamlining, mass inertia, front area, vortices etc. 
Plainly, what's good for the goose, must not be good for the gander.
In other words,  a speedboat has a different propeller than an
icebreaker, a mackerel (fast moving fish)other fins than a sunfish(
slow). Tec-Divers are slow moving fish.

And, other than for propulsion only, you need the fin for stabilizing,
so you want a good strong blade with a well defined surface area.
Matthias 

Davy schrieb:
> 
> Hi guys,
> 
> On the subjects of drag force and high current diving,
> I thought I'll ask you guys your opinions about the latest split fins.
> 
> The split fins seem to be the new revelation in scuba diving now
> with many manufacturers currently embracing the "nature wings" technology.
> When the first one appeared on the market, the Apollo Biofins, I tried it
> but found it too
> flimsy and soft compared to the trusty SP jets. With the split, I also feel
> these fins have the potential for entanglement.
> But there are many divers, tech divers included, that seemed to swear by it.
> Has anybody else tried using the rest of these "nature wings"? What are your
> comments?
> The dive mags are raving about these as well but it's better to hear from
> the real players here.
> 
> Rgds,
> Davy
> 
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