I go to the end of my utility rope, it is 20 feet long so i guess iam 20 feet up. I usually hunt 15 yards back in the woods overlooking fields and they come in from behind me. The woods arethick so I usually don't have a shot until they get into the field. Its been wet here since the opening day of bow season so that has alot to do with them sneaking up on me. I always say that if it sounds like a sound you would expect form a deer then its a squrill(spelling)l and if it sounds like a sound you would expect from a field mouse then its probably a deer. hahaha