Scary fifth wheel/gooseneck hitch

A friend in the automotive towing and transport business decided to buy a 3 car "wedge" goose neck trailer and start hauling longer distance transport work. Trailer dealer bolted down the mount on the floor of the pickup bed with 3/8" grade 5 bolts through holes they drilled through the bed and then on down through the top flange of the truck frame....scary! I pointed out that I didn't think it was up to the task, but he assured me the trailer guys knew what they where doing....and then he turned it loose with customers cars on it and an inexperienced driver behind the wheel....it finally broke loose and trashed the bed and ended up getting another truck set up right....