Oh this? It's just a cold sore...!!
I can tell you a thing or two about the agony of blisters. My H23 was in the water (St Johns River) for at least five years. Some parts of the hull were pristine, while other parts were pretty bad. Fortunately, although some of the blisters were large, none of them went into the structural laminate. I've been drying, grinding, filling and barrier coating for the last four months, and I'm still a few weeks away from getting her back in the water.Right now, I'm now sanding the first layer of barrier coat and filler. Epoxy gets really hard to sand if you let it sit. I'm also doing the work with the boat on the trailer, which presents its own challenges. When I'm done, I'm taking it to the boatyard and have them set it on the ground so I can get at the area under the bunks.The only consolation is that I'll probably never have to do this again... at least not on THIS boat! If you have any questions, you can e-mail me at oneprof@magicnet.net.PeterH23 "Raven"