Was getting ready to repaint the bottom on my Borealis XL when I noticed the two blisters in the pics below. One is about the size of a quarter, the other about five times that size. I opened up the largest one with a razor blade, the glass/resin has pulled away from the wood. The good news is that the wood underneath is solid with not rot visible. The boat is about 4 years old, and was built by one of Pygmy's master builders. I do not see any other evidence of blisters or delamination.

What's the best way to repair this?