I was riding up actually on my first jump, and we had one bumper guy (jumps at lower altitude for less $$)in the Cessna caravan. Instead of exiting straight out and falling he jumped out the door missing the horiz. stab by inches. Amazingly he had a camera on his head, didnt see the video but i bet it was crazy.
Its very important on those drops on the way up to normal altitude to not jump. Usually the aircraft/ pilot will not want to slow down so will not have as much of a pronounced "hump" in flight. The normal hump around 13,500 agl allows you to avoid the stab.
