Juddian:
What gets my goat is those who fail to use the air suspension on the tractor correctly both times, not only to save the landing legs from unnecessary strain but to keep the fifth wheel grease (especially on a newly greased plate) where it belongs and to ensure they don’t overshoot the pin.
This gets my goat as well! Nothing worse than getting a unit where the Suzie’s are all clogged up with grease because some monkey has rammed a just serviced unit straight under a trailer.
Oh, and split coupling a fridge trailer is perfectly safe as long as you use common sense and make very deliberate decisions about the safest way to do it. Trailer brake is absolute 1st priority.