Boiling is a pain, but it works if you give it time. The last time I did it that way, it took 25 mins per side to get the tires off (MT tires). PITA, for sure. I haven't tried the baking method, but many people have told me it works great: Heat the oven to 375. Once it gets that hot, turn it off, and put the tires in. 15 mins later, they should peel off - CAREFUL! They will be HOT so use oven mits or similar. A new club member works for some kind of supply company for machinists etc and can get acetone cheap. He claims that is the best method - supposedly 5 mins per side. You just put some in a cool whip container and soak one side at a time. Anyone ever try acetone that way?

Boiling is what I have always done, and it always wastes the foams. So it might not be something you want to try with new tires and foams. Especially if you spent extra money on Trinity foams...