Just like overpiched said, You must head up to Kununurra, mt isa, karumba or anywhere that has alot of Helicopters, get yourself known and keep going in to the operation. They are all small towns really, so get to know the pilots/staff and wait it out. If they need a new low time pilot and your on the spot then your in and that will lead to hours/experience and more opportunities.
Just my two cents worth
Good luck