You know, I am always trying to think up some way to do it faster, better, cheaper, etc., and it has occurred to me that it would be possible to rig up some kind of roof mounted lightweight flatbed tandem trailer for a van that could carry two skids. The trailer would stay on top of the van until the trailer was needed. For example, let's say you're in a van and you got a load offer that was four skids, two of them really tall. You get the trailer off the roof, load the van with two skids, then hitch up the trailer and load it with the two tall skids. Tarp the trailer load and you are ready to go.
If the trailer were designed properly, it could also serve as a roof rack when not being used as a trailer.
What do you think they said when someone suggested that they put the space shuttle on the back of a 747? But look, it works.
Think outside the (van) box.