I lost one of the locking bumper plugs on the first trip out. With the plug installed, I drilled a hole thru the top and bottom of the bumper, making sure to drill thru the plug, and dropped a 5" threaded bolt thru and put a wing nut on the bottom. Since I store a collapsible ladder in there, I wanted to make sure it could not get out.
2007 Surveyor SV291
2005 Durango Hemi