erparamedic:Thanks for all the recommendations. I will have to try out some split fins. Also, for the record... I've had 3 surgeries on my left knee, 1 on the right, and now arthritis. But, it doesn't get me down... I'm very active! Just get a little sore from time to time.
Gonna check out my LDS and inquire about splits.
It make more sense in this case to change the fins, rather than train yourself up for the "right style" or go to the gym for "stronger calfs"; sometimes you know, different fins are suitable for different people. This example clearly showed the point.