I am sanding on the bottom of my boat, up on the rocker; there was a big bubble in the fiberglass/epoxy. I tried to sand it out enough to put epoxy in there and have wound up with a spot with fiberglass missing. I then applied more epoxy. But I am thinking I will have to sand it down completely and re-apply fiberglass. Do some kind of patching on it, as if it were damaged by a rock.
That sounds pretty drastic to me.
This is on the bottom where two of the three panels of wood meet. It is about eight inches from the stern. I can see the wood, at it is right where the joint is. One of the panels is slightly higher than the other, hence the bubble formation. There's no tack welding on that spot. Of course the inside is glassed and filleted. Is that strong enough? Or will this be a weakness that I must fix now? It is unsightly; I want to fix it, but how to best do it?