BUT CARGO::::: you forgot that an arrow shot on a downward angle isn' t effected by gravity the same as one shot parallel to the ground. Depending on distance, we' re only talking a few feet at most difference. The further away, the less the angle and the closer the ratio and I' m running out of gas. BUT ANYWAY... if you range straight out at your level to a tree and then shoot THAT distance you won' t have to worry about aiming low or high or anything. Just shoot the distance you measured. I always aim at the lower portion of an animal(unless he' s danger close) and expect to hit there if he doesn' t drop at the shot. If you measure to the bottom of the tree and you' re 25 feet up, your range is wrong. IF you shoot it like that.... you' ll hit high. If the deer is inside 25 yards and I measure 22 or 23 I don' t worry about it, 20 yard pin and he' s dead. If he' s 25 + but not 30, I shoot like it' s 25 center of mass. If it' s real close to 30 I shoot a short 30..... etc etc etc etc.