I never could get the knack of that....I think I'm too fat for that method. It requires balancing on a broomstick with all your weight, while also pulling upward on a chicken's feet. I have average size feet and am too heavy to balance on a one inch thick stick, so trying to exert weight on the stick while also pulling upward on a big chicken just seems out of my capabilities. I always fall off, the chicken's head slips out from underneath the stick and there I am with a half stretched chicken, feeling bad for having even started to stretch it in the first place.
I think a chicken wringer would work better....I've used the wires on a truck gate to create such a place and that worked well enough to get them dead but it required pulling downward or outward instead of up...not a good fit for me either.
I like the killing cone just fine...no room for mistakes or balancing or accidentally getting it wrong or ripping a bird's head clean off before you meant to do so, etc. For an old fat lady, after trying many different methods over 40 yrs of killing, it seems to fit me the best.