One thing folks are forgetting to mention is what type of place are you hunting at. I use to hunt in thick woods anything over 10 foot wouldn' t do any good. If your out in the open heck then you could probably use a helicopter (if legal). The higher the better is true for scent but sometimes being real high can screw you up. Don' t forget as you go higher your shot will change, so if your use to hunting at 10 feet you' ll need to refigure your shot if you go 20 feet.