I use Patrik Diethelm boards, Neil Pryde Evo 7 sails and Black Project Fins
Competition
Board Sails Fins
PD 135 9.5 & 8.6 R45
PD 110 8.6, 7.8, 7.0 R35
PD SPEED 52 7.8, 7.0, 6.4, 5.8 RS28, RS26, S29 & S26.5
PD SPEED 43 6.4, 5.8, 5.4 X50, X55
PD SPEED 41 5.8, 5.4 X55
Training
PD 135 9.5 & 8.6 R45 & R47.5
PD 110 8.6, 7.8, 7.0 R37 & R35
PD FSW 102 6.4 RS30
PD SPEED 52 7.8, 7.0, 6.4, 5.8 RS28, RS26, S29 & S26.5
PD SPEED 43 6.4, 5.8, 5.4 X40, X45
I try and get away with the smallest fin I can. Instead of changing fin as the wind picks up I would probably change board and fin. Once I have found the right fin for the board it rarely changes with the exception of the PD 52 which has the most options with fin type.
The sails cross over a lot and I have always options.
