It is not hard to do physically but takes some determination and practice to do well the first time. You have to get your feet wet sometime. I don't use a killing cone or nothing fancy. I just loop a hay bale twine around their legs and hang them head down from a tree limb, in/over a large bucket or garbage can to catch any blood they may fling or will drip when the deed is done. You then can just stick them through the roof of the mouth with an ice pick or narrow blade up into the brain to kill them quick or just cut their throat or head right off and be done. If you use the brain kill they still will need to be bled out by cutting their throat or the head off. They will shake after death for a few minutes. Dip them in hot(about 160 degrees F) but never boiling water and swish them up and down a few times then pluck them. Heavy rubber gloves help with this step. Carefully remove the entrails and organs, paying attention to scraping out all the lungs, cutting around the anus to not cut into the intestines , bladder or gall and release that into your birds carcass. Wash in cold water and put on ice to chill quickly and refrigerate two or three days before freezing them or eating them in order to have a more tender bird after the rigor mortis sets in. Rigor mortis sets in quickly! The alternative is to clean them and get them actually cooking in less than about fifteen minutes before rigor mortis sets in but only old time grannies and pros are that good! I can clean a rabbit in two minutes or less but the feathers of chickens changes everything for me, that and waiting for them to stop thrashing and bleeding out a couple minutes. Chicken and dumplings or soup is good from slightly tougher birds, like older birds or ones with a bit of lingering rigor mortis. My dogs like them all, tough or tender! Get a friend or family member to help the first time! Best wishes for you and your flocks.