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Was there water in these? Did the boat have bottom paint on it, or spend a lot of time in the water/at the dock?
As for how to fix it, the snap mold method described above seems like the only thing I could think of. Make sure you use a lot of pva release agent.
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the previous owner said that he had hit something one day on the water and it put a pinhole in it. It obviously put a LOT more than a pinhole it it. I took off the "surface" repair that he had done and found that in fact that all of the glass under the front of the delam was severely fractured, and was probably holding lots of moisture. Instead of grinding off all the bad stuff like he should have, he tried to cover it up with Polyester resin and fiberglass cloth. the leftover moisture in the other fractured glass(which was not at all structurally sound) combined with his poor surface prep resulted in it coming off again.
I will probably end up using the mold method after I get the spot structurally sound. I ended up having to gring through about 8 layers of glassto get it to a point that I am comfortable put new stuff on.
Lesson Learned: If there is more than just gelcoat blistering type spots that are delaminating, then there is probably something that is seriously wrong with the hull. Long story short: I GOT HOSED ON THIS BOAT.
I will be sure to keep yall posted.