Been done before but thought I'd share. Cost about $30 in supplies from Home Depot.


It doesn't work like a tailgate, when I'm not using it, its stored on the roof rack just below my RTT.Do you have any pictures of it closed? I'd like to see how it sits next to the side panels of the cargo area.
I've done the metal D-ring upgrade screwed directly into the sheet metal. They are pretty stout. I went with 1/16" cable rated at 90lbs each side, I think they would snap before the D-ring does. If someone tried to sit on it, it might snap, but as far as putting heavy things on it, the back half is being supported by the bumper so it can hold plenty of weight, its just the very end that would be the weak point.I'm wondering about the amount of weight that the rings can hold. Eventually someone is going to sit or kneel on the shelf or put something heavy on it and those rings will go bye-bye dumping things on the ground and/or injuring someone.
The idea is a good one though.