I did edit a huey that i downloaded, added these big stretcher like things on the side, had the passenger "get out" position just above these and when the chopper had halted, no movement whatsoever if you were the passenger you could eject and land on on of the stretchers, all you need to do is go prone and you can shoot over the edge. it is very hard to do though, the chopper may move slighty, you will fall of the side. it is almost impossible to use with AI pilots.
Lt Shitkilla