Just to add my meaningless thoughts to this.
As a technical diver, reviews like this have scared me off. tl;dr: Force Fins are magical at flutter, with the feeling of zero resistance, but any side-to-side motion actually does result in minimal resistance (and water movement).
This is a review of 3 different fins types I've had the pleasure of trying out over the course of my dive career. I posted this in the Basic Section because I feel that new divers are most likely the ones to be buying new fins. And as new divers on the board, they aren't as likely to visit the...
scubaboard.com
I live in frog kick. I back kick in doubles and a stage all the time. So the idea of a fin that reduces the effectiveness of the kicks I use constantly for a kick I actively avoid is a non-starter. I actively avoid flutter not for issues of muscles or propulsion performance, but for visibility: I am trying to avoid pushing water up and down, which is where flutter pushes it (with conventional fins, anyway). Even if much of the water goes backward, that up-and-down still creates issues.
However, if that review and its conclusions are wrong, if Force Fins *can* perform within a decent margin of ScubaPro JetFins, I would be much more interested. Without that confidence, though, they’re not going to be interesting.
Now, should the hard-core tech diver market be interesting to Force Fins? Probably not. We’re a tiny segment of a small market. So I’m not expecting anyone to put any effort into wooing us. But if the material is already there, I wish it would be more available.
