I bought a couple of fork mounts ($10 each) and a piece of 1" HSS Square stock 6' long ($12 at Home Depot). I have a Ford truck with tiedowns screwed into the inner bed. I removed the tie down brackets and spot welded them to the 1" HSS, bolted on the fork mounts and screwed the whole thing back in the bed. It works great, its cheap and is very stable.