I will say this, you will know. Its like a little light bulb comes on and you will know when to shoot. I know when I started I thought like you and told myself to keep my shots real close, well when I got my first opportunity a small spike walked by in an open field. I never thought about distance or anything. I just picked a spot and let it fly. It was a perfect shot, he only went about 25 yards and piled up. I than got down to get my arrow and walked the shot off it was 23 yds. to the arrow, so he was about 20 yards. It just felt right and I shot. Good luck and may your arrows fly true!! Remember pick a spot, I think most guys new to Trad tend to end up shooting at the whole animal instead of a small spot.(I like the crease behind the deers elbow where it meets the shoulder) Aim small, miss small. Shawn