You must hunt aggressive deer! I agree that this does break up the sit. I have blind rattled in the past, and probably will a few times each season going forward. But I think in my first couple of years, I may have tended to do it too often. When I do, I try to do 3 sequences over about 15 - 20 minutes, with each around 1 - 2 minutes each, and then waiting several minutes between each. First is light, then get louder/harder in the following sequences. I've only been able to rattle in probably 3.5 yr old bucks and younger tho. I will say there is something cool about the sound of antlers cracking together early in the morning (or anytime). I've witnessed a few bucks tickling antlers while hunting and one actual fight not while hunting.