I have a frabill and also had holes in the bottom. A single strip of fiberglass over the holes solved that problem and didn't add any noticeable weight.
nice, my goal is to fix the hole then slap some cutdown skis under them.im not all that familiar with the fiberglass process but id try it.so mix the epoxy and hardener then slap some fiberglass mat strips over the holes?or dip mat in the resin first.ive repaired a snowmobile crack with the stuff before a looong time ago.