Denny is right yet again. The first time I saw 3m body schutz used I was hooked. It dries hard but remains flexible enough to survive a flex here and there without cracking. My Porsche 911sc rockers and trunk are lined with stuff and painted bright guards red. They look amazing. Just get the $25 gun online and spray it on lightly. It looks like crap if you try and use it to cover up things by putting it on too heavy. I'm doing my 47AD underside in the next few weeks.