Percival Prentice replaced the lovely DH82A and Eric Hughes with Dave Clayton, here flying the Tiger Moth, got the two of them together.   I used to enjoy the Tiger Moth and take ground crew/admin staff up.   One young lad (so was I) from Education I think was following through on the controls very well until we made an approach and at 500' he froze.   I asked him to play 'Simple Simon Says' and put his hands in the air, which thankfully he did.   (Thanks to Ron Gray.)