Is there a difference?
I find with my waveboard and small freemove fin in flatwater or chop I sink the windward rail as I'm worried the fin will let go if I pressure it. ( It doesn't take much to let go).
Yesterday Mark told me to rail it up and that helped powered up on the slalom board but would the softer rails of the other boards change what's needed?
I find I can grovel upwind well and when really powered up seem to be able to hang out the side ( not much foot pressure on the smaller fins) and get upwind ok on smaller kit(pretty average on the large 7.5m + 115ltre board.) When I'm comfortably powered or a bit underpowered I seem pretty average..