I use bait and calling but in a difrant way than most people. Yotes have a big aria that they hunt in so i try to cut it down with bait like a road kill.I place the kill in a good calling spot. let the yotes have at it for a day or 2. Then sneek in to my calling spot look at the bait [no yote i start calling]. This seems to work very good all the yotes from very far away will come to eat the bait but only the bigest stroungest will get to eat the reast will come running to your call.

As HOWLER said decoys can be used but not necassary to kill yotes. There is a ton of decoys that will cost you not a dime. rabbit hide stuffed bunny fox hide all most any hide. A dog is allso a real good calling decoy yes [live dog]

I live in a wide open land so I call A little longer than 30 mins depends on wind and how far my calling is getting out.