I guess a lot of the different responses are dependant on the type of suspension you have. Best thing to do is try it out at home or in a parking lot and make sure whatever method you choose works before it becomes a necessity.
My TT is a traditional tandom axle with spring over axle and an equalizer. I can't use a trailer aid because the other axle will droop too much. My frame is 18" off the ground, no way to safely lift from the frame. For me, I use my Expedition's scissor jack placed under the U-bolts on the affected wheel. It requires very little lift above the normal ride height, and directly under the u-bolts, springs is the strongest point anyway. Had a flat a few weeks ago. 20 minutes and I was on my way.