Well I'm not going to use a deboichet fin only in one board. I hope I can use a custom fin in a few different set. And it's not a question of sail size. I plan to get different size of fin like 46 cm, 42 cm and later some other.
My request is just related to the difference between the SL1 and SL2.
Hope someone has a knowledge about it, not just an opinion, to help me.