I didnt realise this was a rule...(I have zero hours as yet) - I was at school one day, and some pair of mad men in a couple of Cessna's or similar...(Looked like 172's) Started circling around, doing some pretty irratic turns, climbs, and descents... Circled for about an hour...Scary at times...But a fun little private airshow
... There are plentiful playing fields around, but it is a built up area...Wonder if they got their bottoms slapped lol
Regards
Mike