I think 10' is a reasonable height.I've been 15' before and I start to get the shakes,so I just sit down at that height.I've been at 20' before(the heighest I ever been)and I'm basically giving the tree a bear hug!!So I don't go any higher than 10'.At 10' I've had plenty 'o' action(deer walking around right under me,same goes for turkeys and dogs too!!