Cheers, Wide, you old softie you. I must confess that I enjoyed Monocock's merry tale, however.
360 Baktrak: my dad too! He's not an aerodynamicist, but he is an engineer. He knows all the theory, but is still convinced that flying is the work of Beelzebub. He's been up with me once, and insisted on going straight back down. My mum, by contrast, loves it, and would have me flying inverted rejoins if she had her way. My wife hates flying generally, but likes flying in small aeroplanes. Does a very good hostie job on longish trips, but won't go upside down (if airline pilot anecdotes are to be believed, real hosties don't mind which way up they go).
I haven't had any any dodgy passengers, although occasionally I get mildly cheesed off by friends who enjoy the flight but then insist on playing up the idea that it's all horrendously scary when talking to other friends who are dubious about getting into small aeroplanes.