UK aircraft carriers employ the same trick very successfully. Getting "tossed up" in the air is a very effective and safe mechanism for STO.What's needed on a short strip like this is a "Jump Hump". I have 1200' on one strip but can get airborne in 300' two up with only a light head wind. I have a small hump at 300'. Originally I was going to get rid of it and smooth it out but it has proven very useful. The jump is just an undulation not like the speed bumps. It seems purely by good luck to be in the right place and at the right height and angle and throws the aircraft sufficiently off the ground to loose the ground drag and hey presto - airborne. Push the nose down and get the speed goingand away she goes - a bit like the aircraft carrier jump ramp I guess but not so sophisticated!!!