RE: Shooting from: 15 ft treestand vs ground
Using the Pythagorean Theorem(a^2+b^2=c^2), it is fairly easy to find the exact distance from your stand to your intended target. However, you should always aim small and you will miss small. I've always tried to aim at the heart, especially at 20 yds. A deer can "jump the string" and cause your arrow to hit 4-8 inches high. Though this isn't much of a problem for bows shooting 300 fps it is still something to consider.