Oddly enough, I owned a pair of adjustable Force Fins and every time I wore them, my legs would cramp up. Eventually, I switched back to full-foot scuba fins and the legs cramps disappeared. I sold the Force Fins. I've tried many different fins and I always go back to the scuba style with the full foot. Guess I'm a weird duck.
Not so odd, no weird duck. Many of us know and appreciate the difference between the adjustable vs. the regular force fins. You have to compare apples to apples.
force fins are great. got some Outcast fins to try this year. like that i can wear my boots with the Outcast. not as good as Force fins for movement.
I've had a pair of Force Fins since the early/mid 90s before they made the adjustable boot fins. I really like them for stillwater and they propel me pretty well in my old U-Boat and my Water Master. I think they would be too long for wearing in rivers and use Outcast, or Water Master felted/studded boot fins for that. When wearing the Force Fins over a pair of lightweight Orvis booties I had to be careful not to allow my foot to curl over on the up-kick or would tend get painful cramps in my feet because the sole had so little support. I recently bought a pair of 6mm Seasoft Ti Stealth Dive Booties with some very substantial soles designed to provide support while carrying SCUBA gear over rocky shores. I wear a size 11 street shoe but had to get a XXL - 13/14 bootie to fit over my waders. But I found they are still painfully tight if I wear a thick pair of socks or two that I would normally wear with wading boots, so on my next stillwater outing next month I am going to see if the 9mm of wader/bootie neoprene and the booties' "Titanium Flake Foil Technology™ for heat retention" over a thin liner sock will be enough to keep my feet warm. If not I'll have my heavy socks, wading boots, and Outcast fins as a backup and put the Force Fins and booties up for sale and pick up a pair of Adjustable Force Fins or Omegas.
