Like the old saying if you don't want any thing to change DO NOTHING.
Hinting coyotes to get the numbers down is as important as working to plant food plots. The buck you didn't see this hunting season was probably the fawn the coyotes killed and ate in the spring of 2012.
No need for special equipment really either Just a simple 10.00 mouth call squalling rabbit or howler, a shot gun with #4 buck or any deer rifle if you don't plan on selling the hides. that will do the job and don't expect to become a coyote killing machine over night. I hunted them for a year before I was able to call n my first one.
Works best we think if we hunt in pairs also as 4 eyes are better at spotting the slinking coyote in the grasses and brush.
Word of mouth of our coyote hunting has gotten us permission to hunt land we could never hunt any thing on before but being safe and ridding the land owner of the coyote problem has gotten us permission to hunt about any thing on that land now.
Al