[skyking]

I was thinking along the lines of a lightweight panel that clipped onto that current door, and radiused up front so it turned inside a projection off the back edge of the fender. It would have a minimal gap when closed. No moving parts and very light. I'd have to see the "door open" picture to see what I'd be working with. In the mean time, go test it and have some fun, and tape some coro on there later and do an ABA test and see if it was worthwhile.
EDIT: I looked at the pics some more. My idea would also be an ideal shelf for a beverage during REALLY slow speed testing