Great advice from Tony. When you get a good one, be loyal to him and take care of him (or her). One thing that has worked great for me is to pay monthly bonuses based on performance. I accrue 5% from the labor of every job and give it to the crew leader as a bonus. If they get a callback, it comes out of his 5%. Gives him good incentive to do things right. The leader of my best crew got almost $1000 in May above and beyond his salary.