2 days followed by 2 nights has always been the best or the worst ways to go, whether that be 4 on, 4 off or 4 on, 2 off followed by 4 on, 6 off or whatever depends on the nature of the work, often it can take 2 days to 'sober up' after 48 hours in 4 days so 4 off, or a rest day followed by 3 off, does seem to suit the majority.
My last 12 hour shift job was all days, no nights, it was 4 x 12 hour days followed by 4 clear days off but the 12 hour days, allowing for travelling time etc. workied out to 4, back to back, days of 14 hours out of the house, 10 hours of in the house during which one needed to prepare a meal(s) sh1t and shave etc. and that became soul destroying and it really did take a full 2 days to 'sober up' thereafter.
I also, previous to that, worked in a European commune where 8 hour shifts were the maximum, unless one's bosses applied to the authorities which one's bosses seemed more intent on building an empire than realising common sense, and that became ridiculous, in 8 hours one hardly broke in to a sweat and then one had to endure 16 hours off, followed by 24 hours off etc, (2 x E, 2 x L, 2 x N) with little to do but kick heels until time to come to work again, comparible to crew members being given 24 hours rest down route, they're awake after 12-16 hours then have to kick their heels, whilst remaining 'fresh', before coming back to work again but just as they come back to work they'd much rather be back in bed!
But, it has to be said, if one has an objection to working weekends then perhaps they're in the wrong industry.