Backing a rig like that would take lots and lots of practice... When I drove big rigs the clutch went out while backing up to the dock one night... Bad part on a rig when the clutch goes out, you cannot disengage driveline, you just keep going - pissed off the dock foreman when I slammed into "his" dock.
The tow truck came and hooked up, he then back the tow truck (not short), rig (conventional long-nose, not short either) and my 53' trailer (not short) back the entire length of the warehouse drive almost 350' so we could drop the trailer. Not once did it look like it was going to jackknife or twist up and he was not going slow while doing it.
I got a similar chance while hauling double 28' trailers and couldn't back it 50' without something going the wrong way. oh well...
Question? - If you are driving a setup like that and come to a state line with a sign that says "No doubles or triples" meaning RV's and such, what do you do?