Perfect. Speeds up your yak.
Use these for my Hobie Outback. Installing them took about 15 minutes. Definitely a speed increase after installing them. When you pedal these things, the kayak really goes. I can barely feel an increase in resistance, I think these are more efficient than the smaller fins. Hobie should just ship their kayaks out with this as a standard.
Worth the upgrade for the speed. The original fins are far too short. If you have used the original ST fins vs the turbo fins you will understand what I mean. Definitely can feel a speed increase with these longer fins.