I helped a buddy load a pair of trailers a while back to move his house and shop 1000 miles.
He got one of the LTL companies (ABF or someone like that, don't remember). They brought 'em out
we loaded, they dragged 'em to the new place and parked them there to be unloaded. They will hold them
at their yard for a period if necessary. Both places were hard to get in/out of, so the drivers had to break the trains
down for access.
Pack it in tight, and tie everything down and together, with firm padding between. Leave nothing able to move.
Use a lot of rope and packing. It takes a lot of effort, but we had no damage.
Half ass it, and you might as well take it to the dump before you move.
The dually won't haul much. And watch your state laws with weights. Some states, like TX, require a Class A
if your truck/trailer combo exceeds 26K, whether you're loaded to that weight or not. What the GVWR says is what
they go with. Probably 98% of the guys with duallies in TX are running illegally.