When you are on reserve, that is up to scheduling. When you hold a line, you can really fly as much or as little as you want. I know some guys who drop their line down to 30-40 hours so they have more time to do things on the side (like real estate) and there are other guys who are getting paid 100-120 hours a month because of deadheads and because they pick up a lot of flying. Its really up to you. Bear in mind, I do not work for PSA, this is just from my own experience in the industry.