I get the theory and as I noted above, it may work in some rural contexts. My concern is that someone in the city here is going to read that and think it's going to provide some protection against coyotes. It won't and it hasn't. I was willing to test it and found it has had no impact on the frequency of visitation to my yard. Maybe going out there several times a day, nearly every day, for the past year isn't enough?

I'm not sure what your neighborhood is like, but hanging a coyote carcass out for all to see and smell would not work in my neighborhood.

Seriously, the best coyote deterrent that I've found in the city is a well constructed chicken enclosure.