I agree wholeheartedly with ANSA's asessment of the roster. Here in Canada, we work sked's very similar to Australia. A combination of 6/3, 6/4, 6/4 sounds good, but it's usually compressed, leaving you with zero time for family/relationships/partying during your work cycle. Combine that with tons of overtime, (in the busier/more demanding sectors) and we end up working 9/1, YES, that's 9 days of work, one day of rest, then it starts again. Not good for your social life, nor your health! Been doing it for years.
PS: Looking forward to the (relaxed) roster in the sandpit.......