A little over a year at L-Xjet and I can fly mostly 1 and 2 day trips if I want. It just requires some work and aggressive swapping. I have no 4 day trips this month, just 2 3day trips and the rest 1 and 2 day. The downside is that you tend to not be able to credit as many hours and you'll lose out on some perdiem. That may or may not matter to you.