Im in dalby ( west of toowoomba) its mostly wallabys out here and i just run them down. Get them with the centre of the bar and no issues. The missus work utes ( commodores for some stupid reason) all have ally 5 posters. Locally made big slabs of useless crap. Rhey cant get out of most driveways and the one roo my missus has cleaned up so far bent it back onto the tire.
As said above avoid driving at night and if tou do go to hit one line it up with the strongest part of your bar and stay off the brakes ( to keep the nose up)