If you have geese in the area that could work. With the locator calls you are trying to shock the turkey into gobbling and i have heard them gobble to roosters even before and heard of them gobbling to the slamming of a car door. I am not recomending that you go driving down the road slamming your door but there are a variety of natural noises that you could use. For example a red tailed hawk woodpecker, coyote, crow and owl are the most popular but there are many others that will work.