they have to schedule you 2 days off between work blocks unless you wave it. you can do up to 6 reserve days in a row. when I was on reserve and commuting cross country I would almost always try to do six day on then three or four days off. If that didn't work out I would do 5 on 1 off 3-4 on and then like 5 off. It would mean spending a day off in the crashpad but would get me a longer group of days off after.