Mark _australia said...
- Lean forward - lots
- Twist body to get your chest facing front of board as much as you can
- All weight on front foot, and twisting that foot in the strap so it is almost on it's side, like rolling your ankle (little toe side of foot down)
- Sheet out a smidge - lines too far back will kill your upwind ability
- No lateral pressure on fin unless you are on a FSW with 28cm plus fin
And it still won't get upwind like a freeride or slalom board
There is certainly an art to it. Lots of tutorials around, google what Guy Cribb or Peter Hart have on their pages you should find videos and stuff
^^+1
Sailing upwind on wave boards or FS boards with small fins in an entirely different kettle of fish to slalom etc. Load the rear fin and it's all over, hence Mark's advice is spot on. You will also notice that this forces your board to be railed to windward, almost 'carving' upwind...this is correct. This is how you can sail upwind with a 15cm fin

Also note you will be holding nowhere near the speed of someone on say a slalom board, this is purely a function of the small fin, it can only take so much lateral load = speed = a lot less than someone in a slalom board with a 40cm fin.