4. Watch a Buck
Let's say you spot a huge buck 150 yards out, angling toward your stand. Do not take your eyes off the deer. If you look down at your bow or gun for just a second you might look back up and he'll be gone, down in a ditch, behind a hump, whatever. It might take you a couple of minutes to find the buck again. Heck, you may never see him again! Chuck Jones of Knight & Hale Game Calls -- one of the best hunters I know -- recommends a sort of double vision. "Watch a buck with one eye and with your other eye look 10 to 20 yards ahead of him for holes in the cover," he says. "Start planning a shot as far in advance as possible."