I bought one of those yellow trailer aid ramps years ago to take with me. If I am home I use a floor jack and jack stands. Out on the road, I can use my level up hydraulics to pick up a wheel for changing...or a bottle jack.
I tried the trailer aid ramp once on my rig and it would not get the adjacent wheel off the ground once I pulled up on it. It might work fine on other campers.
2016 F350 CC Dually Powerstroke 4x4
2014 Cedar Creek 34RLSA w/Level Up
2007 HD Ultra Classic 103
USS Pyro AE-24 WestPac MM2 '71-'75