Originally Posted by docgr
I'm using a 40 cm fin (both deboichet and C3)
Hi Giorgio, I am 72Kg and have a Is-111 2009. Assuming the inserts are in the same position the only difference is that I use both set of straps all the way back. Mast track is about 1cm from center. Fin is most of the time a Talon 40cm. With a 7.8 you might want a longer fin (the Is used to come with a Drake 38 and 46!) but otherwise you seem set up just about right ... what do you mean by sticky? My Is very low on the water but speed is fine with a large untapped potential on top ...