Very true that a favorable roster plays a big part.
I did the 2 and 1 out of West Angeles, but a lot of others were doing 4 and 1. Not so much the pit crew that I was with, but the other sectioned contractors such as crushing, maintenance etc.
We used to dream of what they termed 'Family friendly' Rosters such as Coyote has where it is even time....... technically your only working six months of the year!
Me being on a Rio Tinto site in the days when Twiggy was expanding his FMG operations, he had trouble getting good operators and so he got smart and offered those working in opposing companies a family friendly roster......the deal was 6 days on, 6 days off for the same $$ as 2 and 1.
Needless to say, we lost a lot of good men and women including my shift supervisor!