If you haven't hunt coues deer before that means you have never glass for the grey ghost. You will need to learn how to glass because I guarantee you, you'll be looking at deer without knowing you are looking at deer. If you do not have 15's then your 10's will do. No rut activity or very minimun. Glass, glass, and glass some more. Get comfortable and keep glassing. If I were you I'' hunt the whole season. Good luck.