I have a 1981 CJ7. There was no rust in the tub when I bought it about 7 years ago, but after adding carpet, the rust started. Now, I get snow and rain spitting up at me and soon enough, I'll be able to drive like Fred Flintstone. Anybody have an easy fix, not requiring welding equipment that I don't have, that will keep me dry until I can afford to get it fixed permanently?