I have a Roll-n-Lock on my '04 F250 short bed. Got it on craigslist for $100. It was pulled off a wrecked truck in a junk yard. Couldn't pass up that deal!
My hitch is a Demco HiJacker auto slide. My FW has a regular solid pin box (for now). It has never hit the side tracks for the bed cover.
My only complaint is that my hitch with all the auto slide mechanism is huge. It is about 1/2" too tall to close the cover. I have to pull a pin and remove the head plate from the hitch to close the cover. Not a huge pain in the rear, but a slight inconvenience none the less.
