AFAIK there's no aerobats around NZHN - I'll stand corrected on that though. There is one over at NZTG, but they would have been a long way from home on a x-country throwing a few aeros in to liven it up, and I can't see that happening....
There's a ****e load of 172's though....
And as for aeros in a 172/PA28, that conversation was last month.