Isonic 145 l (2007) - fin sizes
 

Hi,
I am a 95 kgs sailor, sailing mostly on flat water (sometimes choppy) on my Isonic 145 liter. I usually use a 8m2 together with a 52 cm Drake fin (delivered with the board) However, when it is really windy I use a 6,5m2 but then the fin seems too large as the board becomes quite challenging to handle.

Would a 48cm fin work with the 6,5m2 ?

Any recommendation for a fin to a 9,8m2 sail ?

Best regards
Lars