I personally usually limit my males to 3-4 females. It depends on the age and weight of the male though. Smaller younger males might not be able to handle that many where as older males may be fine with that ratio or even handle 1-2 more. It may be different for each snake, thats why its good to keep acurate records and watch your male to make sure he isn't over bred because they can die from over breeding. For the most part 1 male to 3-4 females is the ratio I use.