Hey all,I have just been given an F2 Sputnik 285 on loan for the summer. Problem I have is my shoulder is not the greatest, so wondering what size sail I should look at? I struggle with a 7m2, being quite sore after uphauling.

I mainly use a 4m2 - 4.8m2 as my shoulder can handle this size well, but I'm thinking that would be too small unless it's strongish winds. The person I got it from said the 4m2 should be ok for me around the 15-20knot winds. but i'm just unsure. I am 80kg the board is 115lt.

Any help would be great.
Thanks