If you are going to be calling while in the stand, after no deer show, I would suggest any off the shelf closed reed hand call.
Like mentioned above, anything that sounds like a small animal in trouble will bring them in.
The closed reed calls are easier to get a decent sound out of as you begin. A open reed call is more versatile but take a bit more to learn.
If you want to start going out specifically targeting coyotes then there are a few items you should look into.
-either a bi-pod or shooting sticks. you need a good stable rest that is portable.
-some type of seat or cushion. Movement will get you spotted way before you spot the predator! You must sit still! This is easier when you are comfortable!
-a decoy of some kind. I like the MOJO Critter but a feather and sting will work as well!
- a set of hand calls that allow you to make any sound you want and then practice a lot! I use calls, both hand calls and diaphragms, from Reese Outdoors!
-an electric call that can attract attention to the decoy instead of you. I will use hand calls and have the e-call running low by the decoy. I use a Primos Turbo Dogg. It isn't the best on the market but it works!
The you need to get familiar with a coyotes body language by watching every piece of video of a coyote responding to a call that you can get your hands on. Register at
www.buckingtheodds.com and they have quite a few free videos you can watch.
You need to know when a coyote is just being cautious and when it sees something it doesn't like.
As for sounds, I would do a lot of studying before you start playing with coyote vocals. A challenge howl invites the local coyotes to a duel. A warning howl tells all coyotes with in ear shot that trouble is brewing! To the human ear there is not much difference between the two.
Learn how to play the wind. A coyote's ole factory may be the best in the woods! No fooling this nose!
They can also appear out of no where and they are fast. An up close fur rocket is hard to find in the scope! I tote a shotgun to each stand with me!
But most of all have patience and learn something each time out!
Oh, and take pictures!
Good luck! It is addictive!