coyotes and bobcats are predators,they survive on there abilty to see,smell and hear everything.unless your capable of hunting in stealth mode your chances of succsess are slim.first off are there cats and coyote where your tying to hunt?are you useing camo?if so does it work with your surroundings?are you useing the wind to your advantage?are you useing your calls properly,hand or electronic?give folks here some info on your set up and you will be steared in the right direction.