Your story brings back memories. Last year I missed the only deer I got to shoot at. She was walking down a trail, would come broadside at about 20 yards, she walks behind an Cedar tree and stops just so her vitals are blocked. I had to stay at full draw for what seemed like forever because she was looking right at me. When she walked out, I lined up, and missed clean. I think my arm was so tired that I let my elbow drop and put some twist in the bow, I don't know for sure, but love getting out in the woods every chance I get. I was pulling 64 pounds at the time, and have backed my bow way down. I have given up some feet per second but have gained much more control and ability to hold at full draw. I was shooting so much at heavy pull, that I threw my back out of whack. Anyway, have a great season, and please keep us posted.
Hunt safe, hunt often, hunt ethically, and don't forget to say Thank You!