I like the gut instinct rule. Also I would never shot over a range you set. Then use the gut rule inside of that range. I know a very respected longbow shooter, that was at the top of the IBO, and passed a 200 class buck at 28 yards broadside. He had a bad feeling. I never really liked the guy until I heard this story about him. My opinion went up, that takes a real ethical person to make a decision like that.