early morning usually will be most productive, but they can be called any time of day. Do you need a decoy, no, will it or could it help, sometimes, maybe. I' ve never used a decoy of any kind, and can' t say that it has ever hurt my chance in killing a called in predator of any kind. I second the mothion in that you would be well served with one of Randy Andersons video' s or the Vermintaor video. Lots of stuff to learn from watching them.