I've always thought the higher you up (to a certain degree), the better you are. Obviously you don't want to have a tight angle to shoot down at your target. I usually hunt 20-25 feet up. My shortest right now I think is about 15 feet. BUT, I think that height doesn't matter to an extent if you can control your scent, movement, and camo. As you can see it just makes it tougher to hunt low...You can get away with more things the higher up you are. But, sometimes this can be your only option and it can be done!!! Glass half full!!!