2coon, try to imagine that it is you being killed by a predator when calling, vary the pitch from a loud squall down to a vey low taking my last breath dying rabbit, then back up to very loud then give it a break for about 3-4 minute's. call from your diaphram not just your mouth, if your chest isn't involved you won't sound as real, kinda like you are coughing up flem and twist your hand around the end of the call to change the pitch, opening and closing your hand. you will need more than one call, try a mouse squeeker vey soft before you do the rabbitt in case the coyotes are close they have amazing hearing and the ability to locate the source of the sound, unless it's windy they won't have any trouble hearing you , it's your job to convince them you are an easy meal also I carry a coon tail tied to a cheap zebcofishing reel with me I put it over a limb in an open or semi-open area 20 to 30 yds from where I'm calling, hold the line on the ground next to your leg and make the tail jump everytime you use your call, DO NOT MOVE let me repeat DO NOT MOVE!!! cover your face and hand's and get comfortable against a tree or rock big enough to hide your outline, the biggest mistake that I see is hunters rubbing their nose or swatting insect's and their hands are like flag's. as someone else said they will almost alway's come in from the downwind side so try to position yourself where they have to cross an opening to get to your downwind side. when you call in and kill your first critter you will be hooked for life. One other thing you need to approach your hunting area as quietly as possible and after you set up give it about 5 min before you mouse squeek, good hunting, Bill