It's a system you will have to start next year, this years youngsters will have to be kept seperate, hens and cocks to be kept apart, you can then freely pair them next season, some will pair cock to cock, same with the hens, you really need four sections, 1 for gay cocks, 1 for lessy hens, remove all that do not pair to the other two sections, fly those on a round about system, they will also be good for motivating the gay/lessy sections.