SlugLife
Contributor
I'm aware of force fins, and they're a neat concept. Reviews I've seen are either very positive or negative; I'd want to try-before-i-buy, or used at a significant discount. Sometimes small pop up on ebay cheap, but I never see large cheap.I had the same problem. Switched to Force Fins and I have never had a cramp since then. No electrolytes, potassium or magic potions. Either buy a new pair or look on Flea Bay. Ask @Bob Evans to explain why.