One thing I look for is a good set of antlers at flee markets. They can be pretty cheap and they have no valued memories for me so I dont hesitate cutting the brow tines off and soaking them in water for a couple days. You cant replicate the exacat sound of real bone hitting eachother. The only problem is, they can be a hassle carrying back and forth. I use a Primos Rattle Bag when I rattle. But it all depends on what I see for a balance during the early season. If there are too many does and not enough bucks I wont rattle hardly at all.