When you are on reserve and GS on an off day you get straight pay above guarantee. In addition, for each day you're gone you get a payback day. On the last day of the rotation, you get a partial payback day if you block in at 1430 or earlier, a full PB day and a partial if you block in after 1430. Full PB days then get placed on top of on-call days, partials give you some portion of a day off. You then GS on top of the PB days and roll your schedule to the end of the month earning single pay above guarantee until you have no reserve days left. The key is getting trips that block in after 1430 since you then basically get 2 days off for the price of 1. Only way to do this is to have a drastically short-manned category. No way to really know when the company will fix manning, so there is some risk involved in selecting a 717 (or any other short manned category) with the intent of rolling thunder.