To me a slate call was pretty simple, with a little practice you can get some pretty cool tones and yelps. Knight and hale made a great sounding call. It is slate with a yellow frame. Tramp stamp is another. Might I suggest taking a mouth call in the vehicle with you for the ride. When ever you go o the store practice it. Go on you tube and try and mimick some f those sounds. I love the mouth calls cause it frees up my hands to shoot. Good luck.