Hobies like the Tigers or Hobies like the 14's, 16's, 17's.

For the first you'll need to be a very good sailor and probably have a spi; the others you should be able to get when you keep clean air and not make major mistakes. The hobie 18's should be a good level measure to you and your boat. I don't think any Hobie 20's ever made it too Aus. of the Fox and FX-one are only a handful in Aus if I remember correctly, so you are unlikely to meet these.

Good luck !

Wouter