Help...Loading a camper solo!

I've got just a bit less than 2" between the camper jack and the side of the truck so when backing in I just line up with that gap on both sides then keep it that way. Slow and steady, get out and check at critical points (before the wheel well comes close to the basement of the camper and before the tailgate frame seats at the back of the camper). It takes me about 10-20 minutes from the time I start backing up to when the Fastguns are secure.