I have a problem with new flyers trying to use one of these things to learn how to fly. The idea is to let go of the sticks if you panic or lose orientation of the plane for the co-pilot to take over. The co-pilot senses that the pilot has given up and corrects the plane back to level attitude. Heres where I have the problem, the co-pilot trains you to let go of the sticks every time you get in trouble instead of trying to fix it yourself! I have found that your fingers get trained to move without thinking by reacting to what your eyes see the plane doing and this becomes a habit. Now what happens if you move on to a second plane that doesn't have the co-pilot and you panic for a sec? You have spent months training your fingers to let go of the sticks when something goes wrong. Now you let go of the sticks and watch your plane go into the ground! OOps! What happened? With a good insructor, you have time to learn what works to get out of a bad situation yourself with out relying on some gizmo!
If you get to this point, you will wonder why you even thought of letting a box take over for you. I know that I won't!