I was gifted a couple many years ago and have yet to use them. I doubt with a single cockerel that it would be necessary.
How many pullets and hens do you have?
I don't do anything other than try to keep from having too many roosters with too few hens.
They will eventually make the hens barebacked from mating and the feathers don't grow back till after molt.
It is vicious. It reminds me more of rape - certainly not lovemaking.
I guess you've never seen...
Roosters grab the back of a pullet's/hen's neck or the comb and climb aboard trying to get them to squat and raise their tail so they can mate up their cloacas.
I've even seen a hen that had part of her comb ripped off by a rooster.