Maybe the venues you've attended have a free for all when it comes to dancing but I'd think most people would say there are really only 2 styles, 'The 2-step' and the 'Stomp' (shuffle) and anything people do after that is just a variation on these basic themes.
I'll say again, I'm not on about people who are bad 'northern soul' Dancers, it's about the people who arn't even dancing in a northern soul style, most of us have managed to watch and learn the dance down the years - why can't these people?...
I'll take the 'Warm up/lesson area' comment as the joke I assume it was intended...