I did 2 of my 5 Big Red Boys just now. I used the broomstick over the neck method to kill them and skinned them instead of plucking -- a fortuitous decision because when I was pulling enough feathers to access the belly for gutting I realized that 16-week-old red, hatchery roosters are nothing but pinfeathers.
I'm heating water to scald the feet now and hope that I can get the socks off.
I had to steel my nerves a little to actually accomplish the killing, and the first time was not as quick as I would have liked. I got the second time right though.
I think that the killing cone would be much easier. But I live in town and can't have a permanent set up mounted anywhere. So for 2 birds today and 3 more on Thursday simpler was better. Gutting after reading these directions was absolutely simple. Not sure about the lungs or the testicles, but I've found a lot of lungs and testicles in store-bought birds so I'm not too concerned.
Its a funny feeling to take a life into your hands, pet it a little, talk to it, calm it down, and bring it to its destined close. But once you get a chicken undressed it looks just like any other undressed chicken.