I saw that video too. I can back up just about the length of the set until It all goes sideways.
Practice makes perfect!
There was a feeder driver here in Burtonsville who was an expert at backing doubles. Story goes he was dropping a set at Richmond. There you have to break them down and put each on a door. Bunch of other feeder guys both from Baltimore and hubs north of Richmond as well as from hubs south of Richmond are standing around outside dispatch just shooting the breeze. The Burtonsville driver is pulling in with a set and sees all these guys standing around....
So instead of breaking the set down he slowly pulls in...honks his horn a few times to get their attention and proceeds to pull way out in front of the first bay he needs to be on, straightening the set up.
He then proceeds to back it up and put his back trailer on the door....again with about 10 feeder drivers are watching. He non chalantly gets out, smiles, unhooks his hoses etc and then puts his front trailer on it's door. He does all this in seemingly less than 5 minutes...smooth as silk.
He parks his tractor and walks over to the dispatch office.
"WOW! That was impressive!", says a North Carolina driver.
"Thanks!", says the Burtonsville driver.
"Where are you from?", asks a Richmond guy.
"Burtonsville....", says our hero, "....it was nothing....everyone from Burt can do it!"