When you say "hold up", are you talking about stopping a coyote from running off when you spot one, or talking about calling one in, as in HUNTING one?

If you're wanting one to stop after you spotted it, then good luck. The only sound that MIGHT work for that, like Ridge mentioned, is a Ki-yi type sound (part of a pup distress call). A high pitched coyote/pup distress call, aka "Ki-yi" (rhymes with "High-High", or "pie-pie") can make a trotting coyote stop for a second to give you a shot.

Personally, I don't believe you'll have any success spotting them, stopping, then pulling out your bow. By the time you'd stop and have a bow out, those dogs will be WAY out of range, even if you could get them to stop. With a rifle, you have at least decent chances. I've knocked down dozens of dogs by driving around until I spot one (on ground I have permission on of course), then pulling over and making a Ki-yi, then taking a shot with a rifle... Usually in the 200-400yrd range though, not really within bow range.

If you're talking about HUNTING coyotes in that area, then a cottontail distress call and a mouse squeaker will be all you need. A furry decoy will help. If you live in an area that has Jackrabbits, then jack distress works as well.

For a casual coyote caller that only wants one call, the Buck Gardner 2 Fur is a good option. It can make rabbit distress vocals (closed reed) as well as coyote vocals (open reed AND closed reed). I can make fawn distress, jack distress, cottontail distress, bird distress, pup distress, ki-yi, low howls, high howls, and barks with mine. I also drilled another hole in the bell of the call and glued in a mouse squeaker reed, so I can literally make every sound I have ever used while calling, all in one call. They may not be the best quality sound in each specific vocalization that I've ever made, but it's the most versatile call I own for sure (out of over 50 calls).

The Primos laminated wood rabbit distress double reed calls (randy anderson series I believe) are some of the best sounding rabbit distress calls I've used. Fantastic calls. These get top billing when I'm calling.