Spirit has a low min day and trip averaging for pay, so it’s hard to credit a lot consistently, unless you want to have 10 days off per month. The more X list you pick up, the lower on the list you go, so you diminishing returns there.

With that said, with the attrition and skeleton crews they run, if you live in base, you should be able to get lots of x list and be able to move your schedule around to pick up x list when you’re off reserve, but you can’t count on it.