Finssssssssssssss

[berg]

Hello,

I searched forums for fins for the isonics

Can you tell me the main difference between the sl2 and sl4 fins.

I have the isonic 122 with a 8,4 and need a light wind and strongwind fin for this combo
I have the isonic 94(09) with a 7.0 and need a good fin for powered sailing

Any advice welcome, also othe tipes of fins I now sail select 35 sl7 on my isonic 94 with 7.0 but missing speed. And have a sl 9 33 cm , very fast but missing upwind on my 94.

Like to hear

Berg