Sailhack said...
^^^ Hey Doggie, I got given one of those fcs 3d fins to demo (on a sup) a couple of weeks ago. I found that the tail rocker caused drag (like weed) until I stepped on the tail, then it slipped out forward from under my feet, but as soon as I regained stance, it dragged again...not sure of the purpose of it, maybe good for downwinders on boards with little tail rocker or for speed on steep waves - what's it like on a sb?
It feels like it drags, seemed to hold me up on take offs. I mite try it again soon, I should have used it on Friday but wasnt thinking about fins, I just wanted to get out there on my day off

They (FCS) recon they are good for stability but it didnt seem to affect the board in that way at all.
Maybe the SUP had alot of tail rocker and thats where you were getting the stop start feeling from.
Anyway, you want it? Cheap