Do you unload you camper from truck when camping?

One of the reasons I have a truck camper is so I can tow boats. I take mine off most of the time depending on the situation and certaily would for what you are describing. I struggled at first when I got my Dodge until I figured out that the bed rails are not parallel. Now I just look for equal spacing at the back on each side by using the mirrors. Takes a little practice but piece of cake, rarely need to recenter, only takes a few minutes to load/unload with electric jacks and never use a spotter.