I bet you could use my Dad's method! He picked them up by the head and Whipped them in a circle over his head...I would not recommend that way because sometimes the head came off...Not pretty....but you do not need much strength for it to work.
Let me find what is in the guide....Storey's says a broom or rake handle. It does not say anything about size so normal broom handle size.
There is a hand method:
A more suitable time-honored method is to dislocate the bird's neck, which kills instantly. Hang the bird upside down by holding...
The best thing to do is to start getting everything together and setup your stations.
Starting is the thing that gets it done. Step one goes to step two and so on...You can do it!
This one if you are looking for a new one. It stays sharp!
https://www.amazon.com/gp/product/B007C1OXA8/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
I also have a kill knife but it is not as useful