Hi just after some advice - i finally attached a windsurf rig to my SUP ( fanatic all wave 9' (150L) ) but didn't change my original thruster fins which are 5" Futures fins. Upwind was hard and as soon as I got planing I suffered from horrid spinout, what fins should I be using, Thanks
If you are getting real speed out of you wind powered rig, the thrusters will start cavitating. Single longer, high aspect/low chord fin to give you some real lateral resistance. Thrusters are for turning on a rail!
Some Allwaves have 5 boxes....use them all. One trick is to ride the board tipped onto the windward rail, so it's always crabbing upwind..slowly. Add power or tuttle box...and large area fin. I was looking at Allwaves, settled on Fly 9'6" with single US box and 4.4" sides. I sup surf with 8.5" and ws with 10.5 large area pointer.
