Tibonty..........You' re right......most shot you need to use judgment whether you have a single pin or 5 pins! With the fast bows of today, you are talking about very little judgment and alot of simplicity. My set-up is sighted in at 20 yards. From 0 to 20 yard its on ( maybe 1" high at 10) and at 30 yards about 3 1/2" to 4" low. You were close when you said aim at the top of the spine, I aim at the spine and trust me, it works. By the way, I limit my shots to 30 yards. I dopractice and shoot 3D up to 50 yards, for that I have marks at every 5 yard interval to 50. Simplicity is awsome when it comes to hunting.

Good Luck!