I' ve got a set of horns tied to a string that runs from my stand to the ground. The ground cover is oak leaves and ferns. I just pull on that string for 30 second intervals for about two minutes. By having the horns on the ground making noise in the leaves it gives the deer a better sense of direction as well as a more realistic sound. I rattled in three eight pointers last night, all 2.5 year olds.