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Old 17th March 2009, 03:44 PM   #4
Erik Loots
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Join Date: Aug 2006
Location: The Netherlands, Alkmaar
Posts: 109
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Jeroen,

I don't own a Isonic, but they are not rare. I sailed a few spread over the last years. It could be your sailing style requires more lift from the fin. There are 2 ways... Longer fin, but you will loose control/speed in higher wind

or just go for more flex in the fin. If you look @ select fins these models have more taillift the Select S07 softness Medium /ghost/ proslam.

On my CA speedboard (also v-bottom) it took a while before I was able to sail good speed with a standard SL7. I really prefer to sail a Select S07 M underneath my CA Speed.
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