William,
If I had to do it, I would consider an enclosed 'Haulmark' type trailer with ramp to put it in. A cheap winch inside the trailer will aid in getting it in and out. You'll probablly want a 6X10' trailer. I'm not keen on the idea of an open trailer for many reasons.
To move the machine, I would buy 4 trailer tongue jacks (like this one or better http://www.harborfreight.com/cpi/cta...emnumber=41004 ) and attach them to the bot. When you want to move it, just put them into position and crank them up. When you want to set the table, let it rest on the factory legs.
Ratchet strap or clamp the X and Y cars to the rails and carefully coil up the wires and control box. Roll into trailer and secure as necessary.
It doesn't get much easier than that.
-Brady
