CHeck out sandringham and brighton clubs, both have been running alternating races most weekends over summer, not sure where they are at.
Also give Hudo a call at SHQ he will know
There is also a melbourne racing FB page, get on it if that were you live
www.facebook.com/groups/kiteracingatsyc/And an australian FB page, this is were most of the talk hapens
www.facebook.com/groups/kiteracingaustralia/You certainly wont get in the way at the nationals, you may be surprised at just how much better the new gear is ;)
Keep in mind the race can only go for 10min after the first guy has finished or a maximum of 30min.
There are always other learners and slower guys to match up with, so it's all good fun