had it out all day since about 6am coyote hunting, didnt see anything , saw some tracks in the frozen ground but thats it, can anyone give me some advice on calling , such as what calls to start with, ive been trying the lone howl to start but not sure what to use next and how often to call or change to something different,any help would be greatly appreciated , i think im more excited about coyote hunting than i get for deer hunting