Here's a photo of the 33mount in action. I'll add some more later on. Take a look at http://grellfab.tictail.com/product/33mount There you will find instructions to download and some more pics. Blue skies! :D
I've been jumping a lot with this mount. If there is risk for rain it is really easy to dismount the camera and put it in a pocket while still in the plane. You won't even have to take off your helmet :)