I READ THAT WHEN SHOOTING FROM A DOWNWARD ANGLE or AN UPWARD ANGLE THE FORCE GRAVITY HAS ON THE ARROW IS NOT AS SEVERE AS IF U WERE TO SHOOT LEVEL TO THE GROUND. PEOPLE (sorry) always try to compensate when shooting from an upward/downward angle...DON'T. aim right were u wan't to put the arrow and it will fly true. i don't know the physics on why an arrow drops the most when fired from a flat, level placement to the ground and not from an angle, say a shot from a tree or shooting up on asteep cliff/ravine, but it does.

THE FOOT