If the blister is shallow, just scrape it clean and fill it with one of the
commercially available gelcoat patching compounds. If it is deeper, you
might want to fill most of it with loaded epoxy first and then apply gelcoat
patch.

BS

"marklan" wrote in message
news:s6boc.28484$xw3.1912829@attbi_s04...
Can and will anyone dicuss how they treated their blisters on a fiberglass
hull also can a blister bleed threw to cause a leak and has any one ever
read about the longest time be fore you should bottom paint again/