Allison Finch
Contributor
I would give the floppy bio fins to your injured knee friend and upgrade to a stiffer split fin. I used my sister's bio's and felt like I had no power or precise turning ability. I now dive with the Scuba Pro Twin Speeds and love them. They are the stiffest SF and I can outswim most paddle finners in a stiff current (I beat a divemaster to a mooring in stiff current in PNG. He was panting, and I was not. I was QUITE a bit older, too). I use almost exclusively frog kick and they perform well. Maybe a little harder to back up with......
Yes, I am a convert to splits....even after almost 35 years in jet fins.
Yes, I am a convert to splits....even after almost 35 years in jet fins.