If you're going to hunt coyotes on a hydro line, just make your set a little more attractive to draw them out. I use a Mojo Critter or two, but I also place crow decoys (full body) around the Mojo Critter; now you've given the coyote a little more incentive to come out of the wood line and investigate. It's worked for me, but as mentioned above, watch the wind!
Just my two cents...