My initial thought was using channel bar to replace my nonexistant rub rails. From that point i was thinking of creating a relatively thin and long shelf that i could hang from the channel. Mounting could be accomplished via a few vertically drilled holes and a pin system (plus a small shim to give the shelf a slight upward angle). I'd mimic the 2" receiver hitch luggage platforms that folks use on the back of their jeeps, just longer. The use of chains wrapped around the roll over bars and then to the outside edge of the shelf could provide support. From that point its a matter of a few bungees to hold stuff in place.
Hmm, might even be able to use waffle board! Multi-use!
(I'm sure the question will come up - A cargo rack would provide a better solution by far, but height is an issue for garage reasons.)
