I know a girl out west who is driving trucks.
Some of the stuff she said was to get all the various tickets (white card??) etc before applying and to list a major centre near to the area you want to work in as your base, for example they pretty much just throw out VIC based applications because it is just to difficult to fly them in/out etc. and with the number of connecting flights there is a high risk of missing a flight and screwing your shift..