We have angle attached to the bed. Use to just be a couple of pieces that had studs welded on, and they dropped into holes drilled in the bed. These are screwed in, as I just don't take them on and off anymore.
The camper slides in between them..it's a snug fit. They're 3" tall, which makes the loading a snap. I can raise/lower the unit if I need to while backing in, to keep it within the angle. Wife usually watches the back to insure that the rear of the bed is low enough, especially on sloped areas. Takes a couple of minutes to load, lower and tie down.
