Thanks for that write up man.
I was actually thinking about this today when I was out for a ride with the wife. I notice that ebbs mentioned a mount that goes in the steering head nut. This is exactly what I was thinking about building. It would be fairly simple do make such an item with nothing much more than a long bolt, washers, Nyloc nut and a peice of rubber that will fit into the steering head. It would be a compression fitting of sorts. I don't see why it wouldn't work, but I also worry that I would have lots of glare on the screen from this type of setup. ???