I’m going crazy trying to get the dried glue out of the inside of my boat. First I used a scraper, but that only worked on the flat surfaces. Then I tried Orbital sander, sand paper just in my hand, sanding blocks, a type of nylon sanding wheel that connects to a electric drill, a round bottom plane and still the glue stays. The concave area has totally perplexed me and sanding seems to just melt and move the glue around. I’m using Tight Bond II glue I think. Don’t have the bottle in front of me. So how do you get that glue out?

PS This is an a Wee Lassie II. I know I'll come up against the same problem with the Guillemot "L" that I'm starting. This time, there will be NO glue drips.