Here is a quick and easy way to repair damaged fiberglass.
I often work on rental boats and skies that need to be operational all the time so quick repairs are a must.
Damaged Ski
Grind and bevel the cracks
Pull in and support damaged area
Add some fiberglass and epoxy
Remove the brace
Add more fiberglass and filler
Sand area
Add more filler
Sand and paint
2 hrs total labor...2 days to complete (wait time for epoxy cure)