I have to fill a 100lb propane tank seveal times a year. The local Tractor supply store is a*al about carrying the tank upright. They are about $40 cheaper to fill than another place that doesn't care if I lay the tank down. With my previous suv I made a carrier for the hitch using a cargo carrier and some extra steel. I really hate having the tank on the back of the truck. Just imagine somebody rear ending me. I would like to carry the tank in the bed. But the bed height is less than half the height of the tank. If I strap around the tank using the factory hold down that strap would only be about 1/4 the way up the tank. That doesn't seem like that great of a hold down. I am wondering what other people do to carry the 100lb tanks. I was thinking of maybe putting some steel tubing in the rear bed post hole but some stupid engineer at gm thought it would be a good idea to make the hole in the plastic bed rail cover not the same size or shape as the steel hole under it WTH? I also don't want to cut open the front bed holet because putting the tank there it might hit the rear window if it were to shift at all. Any ideas?