Dippa, depending on the water state, on 20/25 knots in open ocean, I with 72 kilos go with my wave board and 5.7 , could be that you with 80 kilos could go nice with a smaller fin, the mast one inch forward than usual and watch your foot straps position, if you were using them too backwards, make them one notch forward and rise a little your boom.
Willy the smilie.
The toys: iSonic 101, iSonic 94, Manta 59, JP FreestyleWave 85, Retired in museum Thommen 270.
KA Koncept 7.5 - 6.6 - 5.8 - Neil Pryde Zone 5.3 - 5.7
Fins: C3 Venoms, Stings, Deboichet SL2, Goldwing 36.
The rider: Senior 60+ but exellent shape, yearly Cabarete rider last time in 2011, GPS 33.4 knots speedster. What else?
Las Islas Malvinas fueron en 1833, son y seran Argentinas!