I have been trying to decide how to mount anything without marking the paint. I found some thin, black material at Home Depot. It is a little tacky on both sides, and cuts to size easily. I wrapped a piece around the grab rail and made a piece to go under the small bag I plan to use. A couple of zip ties around the rail and now the cordura bag won't scrath the paint. I found this very inexpensive material in the roller shades dept. Check it out.