I agree with the outdoors man, your cover when in a tree is what really matters more than height. If you look like a bump on log its not gonna matter if your 10,15,or 20 feet your just gonna stand out to anything walking by unless there head is to the ground the entire time. And its not always possible to find the right tree in the ideal spot, we all know that! But choosing cover when possible is better than being 25 feet in a tree IMO... I like to be right between 17 and 20. Do some early scouting and pick out some possible stands, cut some limbs when necessary and be prepared for when ole big boy walks by.......Good luck this up coming season!!