Using the call cow is a great tool when elk hunting. Whenever elk hunting I got my call (s) tied around my neck for quick easy access. As said above works well, another way I use it if you spook elk and they are leaving the area, even if you miss a shot or didnt knock the elk down, hammer the call and you stand a good chance they will stop to look back for a moment which might be your window you need to punch your tag.