I'm thinking about buying some ply wood from lowes and cuttin it I fit in the bed of my truck for kinda like a bed mat...here's the fun and tricky part, I have a deep tool box in my truck so what I was think about doing was measuring halfway up the tool box an making legs to go on the bottom side of the plywood to keep it up. I would like to have a shelf like truck bed. Any opinions and hints or anything would be greatly appreciated.