As I already explained earlier in the thread, my rig is installed very tightly in a corner of the room, as you can see in the pictures I posted. A motion platform makes it pretty immobile. I have to be able to move it for adjustments and cleaning, that'd why it's mounted on castor wheels.
In that case then a jacking system is required.
Like race cars have pneumatic cylinders firing out with the wheels on them, roll it round, remove the pneumatics and it sits back on its motion actuators. Job done!