Maybe make something like this but out of plexiglass:
Use a 1"x1" fir cleat to screw the plexiglass to.
Fasten the plexiglass to the metal ring around the hatch perimeter
Can you buy another hatch from the junkyard and fasten the tail to the hatch? You could cut out the middle of the hatch and have your cabin open to the back of the tail. Then just reinstall the original to return it to no mod status.
Warning, the plexiglass tail seems somewhat dangerous to me, but if it were secured well enough, it should work.