I added scissor jacks to the front and back of our Axis.
Unfortunately where we put the front ones are too far forward on the frame and push up on the entire front--so we don't use the front ones (they are in front of the corrugated part that the bumper mounts to so any force on them pushes the bumper up).
The ones on the rear, however, work great:
I had the rears mounted at an angle to each other to provide a little extra side to side stability. The angle also provided the benefit of poking the end of the jack out between the hitch to make them easily accessible.
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