Go buy you a call cd.. I got one of Buck Gardeners when I first started hunting. Its a combo pack that comes with a call and an instructional CD... One of the things he says in there is to call at wingtips and tailfeathers. Meaning ducks that are leaving you or not paying any attention to you. If they are not coming your way anyway it won't hurt to call to much.. But if they are coming in or looking at your spread keep that call to a minumum.