RE: landing bounce
A lot of interesting comments. I hope to test fly the plane possibly next Wednesday if he brings it. The more I think about it the more I suspect his bounce is due to his flying technique. I mentioned in post #5 that he tends to land long, usually in the last third of the runway. Our runway is 600+ feet with the pilot stations at mid point. The plane thus glides past his position and is going away from him. He can see that he is running out of runway and therefore may be anxious and forces the plane down which may cause the bounces. The whole problem may be he waits far too long to reduce power and thus has too much speed at the approach end of the runway. The plane must then "float" for quite a ways to bleed off speed. Anyway, that is one possibility.
Mike