I agree with some of the other guys looking at a rack too long can make the most veteran hunter forget themselves and tank an easy shot. Just remember the only easy shot was the last one . I too try to get my heart pumping before I shoot also I only look at a rack long enough to decide to shoot then I pick a spot behind that shoulder and let it fly. If you practice good form and practice it often it will become habbit and when the shot comes you will be ready.