MMP - Thanks for posting the amazing video of the 2nd place flight at Nationals. Congratulations to Marie Murphy. I was amazed that the plane did not go "dead stick", i.e. run out of winds, until near the end of the flight.
Also, in further answer to another post, it was very smart to launch the plane from full extension of the arms overhead.
You know the reasons why, but I want to explain to others.
In very high ceiling hight flying sites, you wind to max torque, and don't back off so the plane will climb as high as possible. Many planes experience some motor stick bending and/or stab twist at the beginning of the flight. This can cause positive stab incidence, wide turns, lack of adquate wash - in, etc. You want max altitude at launch in case the plane initially flies in a downward path before the toruqe bleeds off. There is little chance the plane will hit the ceiling so launching from max height is not a problem.
Also, at very high launch torque, the plane can experience prop stall, and "hang" on its prop, i.e. dangle nearly vertically. Max launch height can allow the plane to experience this event yet not touch the ground and still recover.
In low ceiling height flying sites, you often back off torque to get a "no touch" flight, i.e. one that does not hit the celing. You launch from a kneeling position to get the maxium available flying height and there is little chance the plane will experience motor stick bending that will give positive stab incidence and a downward trajectory on launch.