Thanks guys....I know in the past that a boot that's too thick will eventually cause wear lines in the tube and the tube will fail where the wear lines are. Just Shoo Goo may not work with a longer cut. A smooth, strong, flexible and thin patch would be best. It also has to adhear to the inside of the tire which is hard to do from my previous experiences. I will see how thin Hypalon is and think about Velox rim tape(wished it was thinner for this purpose).