Personally? I'm more a fan of the rare practice of reverse polygamy... Where a woman takes more than one male lovers, just simply in the merit that one man can often be less emotionally stable than a group and the maturity of the group behaving as such with a singular focus allows for the people involved to more openly feel acknowledged.
As well in matters of romantic or physical affairs, the ability for several men to keep one woman satisfied is entirely more valid than the possibility for a man who comes from a culture with a predisposition towards the subversion of women's rights is statistically improbable with the Islamic practices of polygamy.
Dually with the methods of Hinduism and the practices openly disseminated in India, knowing that several men are trying to work together and (all the better if they **** eachother in their spare time) is equally likely to the last option.
I end in saying any group that comes together with a common goal and the ability to communicate honestly (no person or persons are disregarding of the others rights, wants or needs) allows for the practice to not only be more substantiated in reason but to be expanded upon as the necessity to mass produce the species has come to an end. (We can experiment a bit now)