If you see a definite lock, you can take the male out and give him his 3 days of rest and then move him onto the next female. This past season (2011-2012) I just stuck with a 3 days in, 4 days out rotation to keep everything simple. It really helped me, but then I only had a maximum of 4 females per male, so I could go one female a week and make sure that each female got paired with their male once a month. It was just something simple and easy to keep track of in MS Excel (for each male, I had 3 columns, the first was for the female he was paired with, the second was for the date he was placed in her tub, and the third was for the date he was taken out of her tub). With this system I was able to keep track of all my pairngs quite well. Also, since I work 10 hour days, I did not see most of my locks, that is why I left the male in for the full 3 days.