How often do your remove the camper from the truck?

I have traveled across the U.S. in our camper a number of times. Sometimes an oil change is due while on the road. I never seem to be able to find a place with enough height clearance when in a new area. This means I have to take the camper off, usually in a parking lot. It's not a huge deal just have to allow some extra time for the process. I back under the camper very slowly and stop and get out several times to check my alignment before proceeding. Just be patient, you can do it.