The thing is, the soft spot and the leak are two different issues. The soft spot has not gone thru the rubber roof. The leak is on the other side, on the attached Florida room. The Florida room has corrugated metal roof, I think there was two spots in the campers small side gutters for the AC drainage and rain to go thru and down the corrugated roof, and find a way in. I just wanted to patch the soft spot so that it does not get worse. As for the Florida room leak, I believe it is coming from where the florida room and the camper are joined, I sprayed some "flex Seal" on the two spots, where I thought my problem was, and have not been back since to check for leakage.