I have owned and still own Force Fins. I have had three different pairs, the Original, the Pro and the Pro Tan or whatever it is. I enjoy using them but they are really a niche fin. I find them noisy and inefficient for surface swimming and snorkeling, slap, slap, slap. It is true they are suitable for the flutter kick only and essentially suck at a frog or side scissor etc. I bought them for tropical travel due to their lightweight but since they are unsuitable for snorkeling this left me carrying a second set of fins which defeated my reason for getting them to begin with, to lighten up and simplify my travel kit.
I also find that the Force Fin lacks maneuverability and fine control, the design is intended to produce most of it's thrust on the down kick and little or nothing on the recovery. OK, fine but since the fin folds on the up stroke that also means you cannot exert any upward force to rotate your body along it's axis. I find them easy to drop the bow (head) but difficult to raise the bow since they cannot apply any real upward force.
If they make a polyurethane Jet Fin in clear blue or yellow I will give you 700 dollars for that and heck, I bet you could install whiskers on a Jet Fin blade for improved dynamic sinusoidal asymmetric thrust vectoring.
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I also find that the Force Fin lacks maneuverability and fine control, the design is intended to produce most of it's thrust on the down kick and little or nothing on the recovery. OK, fine but since the fin folds on the up stroke that also means you cannot exert any upward force to rotate your body along it's axis. I find them easy to drop the bow (head) but difficult to raise the bow since they cannot apply any real upward force.
If they make a polyurethane Jet Fin in clear blue or yellow I will give you 700 dollars for that and heck, I bet you could install whiskers on a Jet Fin blade for improved dynamic sinusoidal asymmetric thrust vectoring.
N