Back in the 1970's, a certain Enstrom factory demo pilot by the name of Michael ("Crazy Mike") Meager, whom Dennis Kenyon cites as inspiration, used to do a little demonstration in the F-28 in which he would do backward touchdown autos. Never actually saw him do it, but know plenty of people who did. Gutsy, man. Then again, at least you don't have to worry about hitting the tail...