I just bought a NKD Slice 9'5.
When I took it into the waves I had a weird experience. When I tried to turn the board it would just tip over and continue straight.
On my Gong cloud 125 Thruster I was experiencing none of these issues and this is my first quad, so maybe I am missing something. Is this normal quad-behavior with poor technique on my part?
Regarding fin setup, the fins supplied were quite small. Would bigger find help?
Most probably, you need to move your rear foot further back. Quads need more leg action to turn than a thruster. And the NKD has the rears close to the fronts, as opposed to a McKee setup where the rears are closer to where a central fin would be, which makes them smoother to turn, a bit like a compromise between a thruster and quad. Your NKD looks like it would require more preparation and commitment in turns.
You can try to put smaller rear fins. SUPs are very hard to turn with "normal" (sized for prone shortboards) rear quads. Twin fins in the front + small trailers in the rear work very nicely if the waves are not too big.
Thanks! Great info! I have ordered some k4 14cm stubbies that I will try and put in the front.
Do you or anybody else have experience with adding a center fin?
Would it make sense to add a center finbox and make the board a thruster? Or would I just be polishing a turd?
A center US box would be a good idea. Being able to try your board as a thruster, or 2+1, or even as a single fin in slow waves should be quite interesting.