chemie,
You are probably flying your SSE by now.
I finally came up with an idea that I liked for the hatch. Hope these pics come out. I used some 3/8 square hardwood to make the "mounting pieces" on each end. I made some edge stiffeners out of 1/4 tri stock. Was really quite easy to do. The only hard part was getting the 2-56 blind nuts and screws. If you want some details, I can post here. Won't be able to get to my computer for a day or so.