It really depends on your category, I am in a short/small aircraft category with only 90 pilots, and even though I am senior on reserve I just about fly every day that I am on. Couple that with an average of 5 short calls and your month is full...painfully full. Raw is automatically computed for you. You will need to put a slip in for what short call periods you want, or they will just slide you in where they need you after everyone else s request.