Nice work, great idea. I love the multi-function and adaptation. Couple questions- it looks, in the pic, like both tracks are mounted together like legos stacked on the side of the truck? My sense of symmetry is asking if they should/could be mounted either on both sides or on the tailgate? I can not really see your whole rig to get a sense of your layout, but I really like the idea of what you are doing with it. It has planted a seed.