Rotors88
I disagree that there is no point in power recovery autorotations. The aim is to teach someone how to get to a position over the ground they want to land on, and get there with a minimum of foreward speed and vertical speed. You don't need to touch down, and in fact there are a lot of places where you'd like the student to practice getting to that would not be good to touch down on. Power recoveries, if done right give 90% of the teaching points at 5% of the risk.