Actually, boat trailers can be quite difficult due to their short length. With a little practice, backing up a 53-footer is child's play.
Backing farm wagons is more fun especially if backing one loaded wagon up to a second one .
No mirrors,cannot see the other wagon tongue...
You either learn to judge distance and steering really well or spend lots of time getting off tractor to check.
When younger I learned.
But never drove semi tructrucks.