Stabilizing jacks don't really stabilize much at all

I use a pair of Camco stabilizing jacks under the frame rails just ahead of and behind where the axles' spring shackles mount. That takes all of the bounce out of the trailer, period. If I'm not staying for long, I just use one set in front of the axles (about the middle of my 36' trailer). My next rig is going to have 6 point auto-leveling. I'm getting too old and fat for all this bending over.