I've carried some "expanding poles" in some Dry Van Trailers and they rode very well laying on the floor. If I couldn't set the Loads with Ratchet Straps, I must have been hauling 2 or 3 or 4 Paper Rolls with Rubber Mats and Air Gun nailed in short boards.
Never pulled a Reefer with those "expanding poles".
When I couldn't SECURE ANY Load in a 53' Air Ride Dry Van, there were those Inflatable Air Bags, installed by SHIPPER.
The thread topic was best run on a Skateboard or Curtain Side WITH SECUREMENT!!
Too many "scientist drivers". Some Live, some do not.
A Load is a Load is a Load isn't without SECUREMENT!