When we add a cargo tray as a generator station, extra water tank and fuel tank storage and steps I had the welder drill a receiver pin hole in the upper square tubing in the center of the cargo tray to mount our bike rack onto. Granted it sets back there with the other stuff but is higher than it would be coming out of the truck receiver so no ground dragging, and we can still enter and exit the camper without removing the bikes for stops here and there. Everything connects together with locking receiver pins. When towing a trailer with the FJ on it the tray simply mounts in it's receiver till we get where we're going to unload. The horse trailer we haul sometimes also, has a bumper receiver in the back for the cargo tray minus the bikes of course. Now that DOES require removal for my kids horse to enter and exit. Maybe look a bit like gypsies on occasion but it works fine.