Katelyn Boss is a 22-year-old server at a sports bar in Salt Lake City, Utah. She thought it was a waste of time at first. The tips were bad, and her base wage was $2.13 an hour. Then she tried putting her hair in pigtails to get higher tips from male customers — and it worked. When I first started working as a waitress at a sports bar and grill, I was struggling to make tips. It almost felt like I was wasting my time. I was making so little money, because the minimum wage in Utah for tipped employees...