I always have a thermos of coffee, bottle of water, and an empty plastic container so as to not leave any territorial makings on the ground. I snipe for long periods of time, in one place. I know their trails, and it's just a matter of time whern they show up.
Medicine makes me sleepy. If its that time of year for having a cold, I just don't go out. They have too good of hearing to be coughing, and think you're getting away with them not hearing you.