i read an artical in i think it was the ama mag. about how a few guys put gyros on the elevator and rudder of a foamy to test it out, and they found that it worked to some extent. in order for it to hold in a hover they had to have the sens. on the gyros set at max but if the plane drifted to far out of center the gyro would cause an over corection leading to an out of control airplane. but if they lowered the sens. it would not even hold at all.

it was quite awhile ago when i read it, so if someone else has had any experience with it, maybe they can chime in....