Its fairly rare, but I have seen 1 case where the blistering was so bad as
to weaken the hull considerably and this boat was kept in freshwater

Tony uk

wrote in message
ups.com...
Interesting material. However, I intend to re-start the debate over
the effects of blisters. Can anybody find any examples of hull failure
due to normal blisters? I maintain that such blisters are at worst a
cosmetic problem that are ussually hidden under water. I have seen a
web site that says 80% of all blister repairs, even by gelcoat peeling
are failures.