Good topic Howler.
I think it is very important to try to read any signs a coyote might give when it is approaching the call. You need to know if the shot that you are about to get on an approaching coyote is going to get better? or is it about to get much worse if you don't do something about it? This is very important if you want to get that coyote dead.
I have many times watched coyotes stop and look back towards the direction they just came from. I am always torn whether to wait and see if a buddy is coming behind. I figure its better off to get one for sure so I always shoot the first one when I get a good shot. I know I don't want it to get too close hoping that a second might be coming. After the shot I go right back to calling. No whooping,hollaring or patting myself on the back. Chamber another round and get ready. Sometimes that second one will materialize and sometimes not.
I look at how fast a coyote is moving into range whether I will need to stop it(with a whistle,bark,or whatever you use) or if it will pause naturally within good rifle range(less than 100 yards) for me to get a shot. If a coyote stops say 200 yards out and is still facing the sound, I will wait because they often times keep coming after a moments pause. If they stop and turn broadside to the sound I figure they aren' coming any closer so I get ready to shoot. Experience is going to be your best teacher about what to do when.
I think last spring Wiley had a post about "How to handle coyote when on stand". It was some very informative reading. Anybody who is just getting started in calling should see if they can find that post and read it several times.
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[This message has been edited by Lonny (edited 02-27-2002).]