I’m thinking I’m going to try my hot glue method but I don’t know if the glue will stick enough to pull steel. I don’t have to polish this tank so just getting it straight will do. Plan B would be remove one end and work it straight over a piece of exhaust pipe, like I do Row Boat Motor mufflers. (B H Repair) That would be the easiest and fastest. I’m flip flopping on how to remove one end though. And then I have to get it back on. Not the best at soldering. I can get by doing the flat Row Boat Motor tanks but this thing is round. Steel tanks I usually save for last. They only take days. I have some time to think about it.
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.