Always set up in a shady area if possible have the sun to your back, try and figure the direction the critters will come from and set up down wind, coyotes will circle down wind every time, and watch the weather anytime the barometer stats falling that means a front is moving in the critters feed best times i find is when baro is below 28" of mecury and falling be out calling day or night. Coyotes will usaully come in within rather qiuckly ten min. or less bobcats alot longer thirty mins. or so. My rule is uasully 30 mins. stands if nothing comes let them starve. Good Luck Have Fun