DH uses the tried and true hatchet and stump method. Once the head is off, the bird goes into a 5-gallon bucket until it’s done flopping. I don’t have to chase it around the yard that way, and the meat doesn’t bruise. I’ve never had to kill my chickens because DH does it, but if I did, I would use a cone and a sharp instrument to lop the head off. I am not strong enough or coordinated enough to attempt the hatchet method. I’d likely injure or remove some of my own parts.