I have heard there are plenty of bonefish in australia. They just happen to be in the most inconvenient place for flyfishers(in deeper water)usually. You do hear the occasional report, I read about one being caught on bait near sydney a few years back.
Not surprised that one was caught around Noosa, was it a surf beach or a wadeable , flats style beach? Keep us posted if you find anything new
Cheers
Adam