NSI stick on foot inserts

[supfoo]

HI, Has anyone used the NSI stick on surface mount foot strap inserts?? Was looking to put these on for my SUP foil, worried they are going to come right off.

[PonoBill]

Lots of people use them. They have to be applied to very clean, smooth fiberglass. The trick is to clean the area with very fine sandpaper--as fine as you can get, a rough surface is bad, a dirty surface is worse--clean with alcohol and let dry, then stick them EXACTLY where you want them with 20 pounds of weight on them. Leave them overnight. You won't be able to remove them without damaging the surface if you do all that. The adhesive strength more than doubles

[supfoo]

Thanks PB!