I am with you. I was thinking of using lizard skin as well but couldn't find anyone that used it but had a few people ( some on this forum) recommend bedliner as well. I am going to coat the whole underside of my car including fenders. I bought the sem kit with the gun. I think I am even going to use it on both sides of my running boards. Since my car will be used for a daily driver I know the running boards will be stepped on a lot from my kids. I also live down a grave road and need the added protection.