>>2716785aight i had a thought about it today and tried thinking of the simplest device. behold. i tied several layers of some heavy wire, firmed them up in the center of the frame, lower so gravity will keep it in place. a clip to slide the thread of the tripod through, nut to keep it in place, little elbow grease to fit the piece in. zip tie it up when complete.
nut is secure, one easy turn with a wrench to undo. the braided wire is also centered on the frame, and i suppose i can attach something else as well.