Originally Posted by mcross19
Neo, I haver an 8.6 Severne Turbo and can plane in 11 knots of wind with it and I weigh 85Kg. If I were thinking of going biggger than 9m I would consider a sail with 3 cams definitely.
Early planning is all about technique and if your technique is good the isn't much between a 8.5 when compared to a 9.5.
Best recommendation is take your isonic 137 along to a demo centre and borrow a few deifferent sails.
Yea i can support this answer i have a tow cam Ezzy Lion 8.5 with 100% Carb Mast and 48cm Deb Fin my wight is by 86Kg and i am planing by ca. 11 Knoten too