Well, I guess I was wrong about the suitability of Gorilla Glue for this application. I have mainly used Gorilla Glue on wood, and it worked quite well as long as I applied a very small amount. The fact that it expands when it cures does make it unsuitable for some projects. Personally, I probably would use epoxy for rubber mats or trailer carpet because I find it easier to apply with a thin, even coat. However, this is just personal preference.