I understand cost in a private display organisation, but how often do display pilots practice their routines? I would suspect that different sites require different manoeuvres, and also often different allowed durations. If this assumption is correct then there could be 3 or 4 different routines in a pilot's portfolio. All need to be comfortable, especially at low level. This also includes having a 'flat display' option. The professional teams practice the full & flat display regularly, what about the solo guys?