I have been looking into the purchase of a sander. I can't really decide on which way to go. I currently have a tool box in the bed of my truck cutting down the availible space to 6'. I like having my tool box but fear that a tailgate sander will be more work than it's worth. Does anyone make a 6' V box? That would basically give me a good capacity with out all the work of refilling as often? My truck is a 99 F350.