Remember holding to draw at a target and holding at a deer are two different things. I think the adrenaline will help you hold longer, but I also think you need to be able to hold steady. Make sure that the arrow you release is going in the boiler room. I had a doe a couple years ago I held back on for a long time. It was probably only a minute or two, but it seemed like an hour. I had to stay focused on the shot and holding steady. I put the arrow in the boiler room and she collapsed after about 40 yards. I hope I never have to stay drawn that long again, but practice holding for periods of time just in case. Good luck this fall!