Hi, can't remember my password and waiting for reset link. There is a product called KBS patch that works very well. Comes in various sizes up to 9 x 11. It is a peel and stick patch that is activated by UV.... either natural sunlight or for undercarriage or cloudy days by use of a UV flashlight available on the site. The stuff sets up hard and really sticks where it is placed. I had occasion to use it on a rust perf on my pickup... very highly recommend. Just resist the temptation to poke at it before totally set up since it will definitely make the surface distort, don't ask how I know this.