Yes, absolutely, I use them a lot.
With my MA21 I like to start with 5 minutes of distress calls (fawn distress is my favorite), then run 2 cycles of Adult Coyotes Fighting over Food, then either Pup distress or Adult Coyote distress.
It's not 100% or even 50%, but it's a pretty good combo around here.
The woods behind my house are pretty thick and used to hold a Bobcat ocassionally. So Tuesday I went to try to call a cat, less than 200 yards from the house.
My plan was as follows; 5 minutes of Bobcat/Grey Fox Fight; 1 minute of silence; Then 30 or 40 minutes of Grey Fox Pup Distress, to give a cat time to expose itself.
Now let me be perfectly clear, I am no cat calling machine. I started really targeting cats last year and called and killed 1, but the sequence I planned was what worked last year.
Back tothe hunt;;; I played the 5 minutes of Bobcat/Grey Fox Fight, and muted the call for the planned 1 minute of silence; Before the 1 minute of silence was up,
a coyote pops out in an old logging road about 60 yards away, Bang spin, bang flop and she's down. (I know, to many bangs) I immediately go to Coyote Pup Distress and 4 minutes later coyote #2 comes out on the same logging road, no more than 5 feet behind the first coyote. OK, so I missed the second coyote, but evidently they didn't like a bobcat and grey fox fighting in their territory.
Anytime animals fight, there is a chance to kill something, either food or competition.
The wife and I called a coyote once while crow hunting.
I started the caller on Crow and Owl Fight, and the coyote came hauling butt in less than 1 minute later.
Try some fighting sounds and see what happens.
And Good Luck to you.
Shayne