Trailer Frame for Setup

[WontCrawl]

I'm going to build a 20' Surf Dory and it occurred to me that I could remove the trailer wheels on my double axle to give me a comfortable building height. I could level the frame with stand jacks and set my 2 X 6 box frame on the trailer beams fixed with angles. This would allow me also to move the boat around if I need to by simply remounting the tires. (My frame is solid and flex-proof). The frame has many open areas for faring as well.

Just wondering what you think of this idea.

Thanks