If the coyote is focused on you, kill him.
I don't use a decoy unless maybe I'm in the southern U.S. The desert can be thick and a decoy will hold the pred's attention while I get the shot.
In Alberta, I have used a magpie wing on a barb wire fence with some success.
But really I worry more about being busted while I"m setting up a decoy than putting on a visual for the coyote.
I've hunted with a lot of guys and everyone of them calls differently.
I call lots and loud. I don't want the coyote to 'think' about anything that might tip him to what's going on. I want him focused and coming in hard.
He can stop when I tell him to stop, and that's gonna be inside the 200yard marker.
closer if there is more than one.