I typically try for males in for 3 days and out for 4. Then I rotate the male to the next girl in the line up. I tend to breed males to 1-4 females depending on his age, experience and condition. So some females may not be with a male for 3-4 weeks depending on how many he's breeding. Males that only see 1-2 females obviously see each other more frequently. Most of my males tend to eat throughout the breeding season, so I don't really need to worry about over extending them. Hope this helps, good luck.