Well I hadn’t given that much thought. Your comment got me to thinking. Several things occurred to me. I decided I’d try the chisel first. While that’s working it’s not just popping off. Took 3 try’s for the first piece to come off. I chipped off a couple more. I’ll get the rest when I get to it. I’ve never used this stuff before. It’s really stuck on there. No sigh that the gas had loosened it around the hole. The tank had a patch in it. I wouldn’t put much gas in it to barrel test the motor. First time I filled the tank was when I put it on the boat. An internet search came up with this stuff and it was easy to get. I cleaned the tank there really well and scratched it up with some sandpaper. It worked great for what I was using it for.
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.