Loading TC with a Dually challenging?

Whoa.....been loading out Lance 1181 on and off a F-350 dually since late 2005. Never an issue! Sure sometimes you've gotta get realigned but no biggie. I measured a mid point on the front of the cabover and made a mark so I can stop, get out ant gauge if I'm coming in straight by reference to center clearance light on top of cab. Additionally, I measured bed side to side v.s. camper at bed top level. Once done, I mounted a piece of zip tie I cut off at precise distance the rear left bed should be from camper and mounted that at the aft end of P/U bed. I use that as a guide as I back in to let me know if I'm aiming right. Took a little practice at first to get the aim right, but overall it's been a piece of cake. Not to worry, I did it, so can you!