I have a nice Rhode Gear roof rack that I have not used for years, it has Lockjaw mounts on it which is what the Amazon rack is copied from. I used it for thousands of miles and never worried about it, they don't come loose. Thought about robbing the mounts and such from it and installing them on the camper. The rails would come off the pop up before the rack let go of the bike. I hate to tear that rack system apart, but have been unable to even get $100 out of it on CL. And was nearly $600 new.