I've got a couple of knicks on my new second hand carbon fibre foil board. Both are on the fins / foils at the backside edges where it's thin (approx 4mm x 2mm). Apparently you just sand them out?

Anyone able to explain the procedure in a little more detail please? What grit sandpaper? Start with 120, go bigger?

By the way, one session under my belt on the board. Bloody hard to adjust to the required riding style. Once I did get going, I was most impressed with the light wind performance.

Cheers.