My first couple, I did the jugular slice. On the second bird, I failed miserably, and had to cut her again.....
After that experience, I decided to resort to more brute force; I have a little snub-nose .22 pistol. I hang the bird by the feet, and place the barrel right behind the eye. One 'pop' and the bullet is straight through the brain and the bird is dead, all but instantaneously (A jugular slice a few seconds afterwards allows more blood to gravity drain). That's my objective anyway. For a grown man, I have a tough time doing in a chicken.
Wade