For specialty trailer like low bed or those that have axles which slide far enough forward to lower the tail end of the trailer to the ground it is most helpful to get them up on their side or completely turtle .
The problem is it takes a massively strong assembly to accomplish this safely. being able to handle big and heavy stuff has never been a problem for me until now. Before I used to have a 25 ton forklift and a 35 ton crane with the 2 machines I could pick up and carry a fully loaded semi trailer.
So now I am going to construct a device in 1 end of my shop to be able to lift one end of a trailer and will use my big A frame gantry to handle the other end.
But first this all boils down to constructing the column to handle 10 to 15 tons of weight without bringing down the building in the process.