Get somebody to make you a wedge, put the rack in the hitch, snuggle it up with the bolt on the side then slide the wedge in the gap where the anti sway bolt should go (you might have to remove the anti sway bolt) tap the wedge a few times with a hammer then a few more times for good measure and you're done. Wiggle the rack around by hand and make sure it's not going anywhere the truck isn't going and load up the bikes. When you want to get the rack off remove the side bolt then tap the rack out of the hitch with a hammer, once the wedge backs out enough pull it out and remove the rack the rest of the way.
