I yellow slipped on my x days earlier this summer. Normally assigned reserve trips early in the month gave me a lot of hours, so I yellow slipped trying to fill up. Got some pretty good trips too. By the 22cd of the month I was full and the wife and I went to the beach.

Did I prevent someone from getting a greenslip? Maybe. Do I care? No. As you said, it's legal and I will take advantage of the contract to improve not just my pay check but also my quality of life.