Too many variables to really answer; different companies, different rules, different needs.
At one point company had 60 crews/9 hard lines in base. Reserve was gravy.
Another time, not much later, same company had no reserves in any base. The guys that knew the flaws in the contract and manipulated crew scheduling made out big: They would go 30/7 as fast as possible, get paid for a scheduled day of reserve that they could not fly, pick up open time on scheduled day off at 1.5 rate, making it easier to time out on their next reserve sequence, got paid for 2 days of scheduled reserve, and work for 1.5 rate on their days off a gain. They flew 70 hours a month, billed 100-140 hours (yes 140) They usually wound up with 3-4 days off more than minimum and equal to senior line holders Their goal was to leave the house and not come home till they timed out. Hard to have a "schedule" that meant nothing to the wife, but TT at home made up for it.
Reserve, living in base, beats commuting if you really work at playing the "reserve card".
At one point company had 60 crews/9 hard lines in base. Reserve was gravy.
Another time, not much later, same company had no reserves in any base. The guys that knew the flaws in the contract and manipulated crew scheduling made out big: They would go 30/7 as fast as possible, get paid for a scheduled day of reserve that they could not fly, pick up open time on scheduled day off at 1.5 rate, making it easier to time out on their next reserve sequence, got paid for 2 days of scheduled reserve, and work for 1.5 rate on their days off a gain. They flew 70 hours a month, billed 100-140 hours (yes 140) They usually wound up with 3-4 days off more than minimum and equal to senior line holders Their goal was to leave the house and not come home till they timed out. Hard to have a "schedule" that meant nothing to the wife, but TT at home made up for it.
Reserve, living in base, beats commuting if you really work at playing the "reserve card".