I don't think he is either. I urge him to make it worth his time.

I had built one to haul 2 planes in the back of my pickup. I spent several hours cutting, gluing, etc.
Then I purchased my van and I wanted one that I could slide in and out and haul more planes.

It works perfectly, is stable and I can leave them in the van all the time. All that loading and unloading
is now a thing of the past, notwithstanding saving all the dings on wings, etc.