Like the hitch point support for aero-boxes. Have you looked at available swing-away hitches. It will allow you to have access to your bed AND have your 'aero' storage/tail.
Sharing very old concept fun sketches from another thread.
http://i429.photobucket.com/albums/q...IQpapoose1.jpg
http://i429.photobucket.com/albums/q...IQpapoose2.jpg