There is a lot of differing opinion regarding this product. There are a few situations noted in the instructions that mention certain conditions where the produt won't work (minor for this topic).

I have set one of these up on a Cub for a club member. Being able to let go of the controls and have the plane return to upright level flight is a good thing. However if done close to the ground it could cause disaster. Flying at a reasonable altitude would give good results. If on a buddy box taking control and "righting" the plane is exactly what this product does. An opposing view is that training a new pilot to release the controls in a situation could cause problems later in the learning curve. For example if the plane is heading at the pitts and the controls are released in a panic the results may not be the intended ones.

Howard Matos (of FMA) has used this at the DC/RC field with good results.

Used as a tool for learning with this is a good question. Just how good a tool this is would depend upon the use it is given in a specificic situation.

EXCAP232