Over a half centry in the woods I have taken four or five deer from tree stands. Does a barn hay loft count? All others have been while sitting in tree root balls in swamps, standing next to a tree or fence/hedgerow. Over the years I have simply walked up on a buck or vice-versa. Once I was walking thru planted pines about three feet tall with the associated weeds when a big buck stood up and startled both of use. Now my boys hunt from height that would give a normal person a nose bleed. They say eighteen to thiry feet. But I would agree with others that it depends on the terrain. Don't get so high you have no backdrop behind you. And please be careful. I've had friends get badly injured falling from stands. Reason I don't climb high is because I falls asleep while enjoying the peace and quiet. No tellin' how many deer have gotten a chuckle from hearing my snoring while sitting on a stump.