Where to place jack to change tire on Toy Haulers?

My dual-axle toy hauler had too much articulation between solid axles to use the Trailer-Aide (not enough lift). However, it works on my cargo trailer which uses torsion axles. I know I am applying all the weight of one side of the trailer to a single torsion arm, but feel this fine in a static application for the limited period of time needed to change out a tire.