Sensitivity to the mileage loss lead me to design & build this rack. Walking on it was necessary (race viewing platform), as was being able to hold bikes up there. It also mounts a rear facing dust/fog amber and has provision to mount a rear air deflector to blow the dust off the rear window(s). The deflector didn't get made b4 I took it to Baja for the 1k in '02. Once mounted to the '91 I hope to get around to that and the planned string of LED's mounted to the underside for camp lighting.
The perimeter frame is 1-1/8" x .065" wall square tube with 3/4" ply sitting on 1/8" tabs welded to the insides of each opening. Each of the ply pieces is mitered ~4" long on the hypotenuse at all 4 corners to allow tie-down access to the frame. When not loaded it presented a fairly low profile to the wind, and it was deliberately set close enough to the roof to act in semi-safari top fashion.
The rust monster evident in the pic claimed this truck shortly after this pic was taken. I plan to redesign the attachment points and install the rack on the '91 Sub.
I used to swerve around my hallucinations, now I drive right through them.