I suppose I'll take the new forum out for a test drive with this question too.
Near the rear of the frame, there is a small, U shaped, cross member. I believe it's only fuction is for the spare tire carrier. This piece is installed with the "U" up, so it fills with debris. Could this piece be installed with the "U" down without any adverse effects? As I see it, the only change would be to use a longer bolt for the tire hanger.
At least that way it wouldn't be a 2" wide x 1" high x 4' long dirt tray anymore.
Merle