Hers my problem with the "thingy"; when things go wrong, you are supposed to let go of the sticks and the "thingy" is supposed to level the plane. Now what is this teaching you, when things go wrong release control of the plane and let a gizmo get you out of trouble! I watched one of the "thingies" take over and crash a trainer because it wasn't set up properly prior to the flight. The new guy insisted on using the "thingy" because he though it would save his plane if something went wrong. I refused to fly the plane with the "thingy" connected because I didn't agree with the idea of them so he found another instructor instead. Glad it wasn't me! Trainers usually have a lot of dihedral which means if you relax the right stick the plane will self level any way and even this can teach bad habits. When my son went from a trainer to a low wing. he almost crashed it because he was waiting for the plane to level itself like the trainers after doing a turn! Once I told him that you put it into the turn, you have to get it out of the turnyourself; he was ok![8D]