I've been giving flight training for over 40 and way back I thought there had to be a easier, faster and safer way to teach than when I used a buddy/box. So quite by accident, I developed my teaching technique.
Here is a video of me teaching kids to fly on a winding day. One kid (65) learned faster than the younger kids and was able to fly totally on his own, minus landing, in one 10 minute lesson. This was at an annual club event called FONRA, put on by Wing and Rotor RC Flying Club in Niagara Falls, NY.
http://www.youtube.com/watch?v=KE0MJTfm6pw
Fliers1