For me its the tree and the cover it provides to tell me how high I need to go! I have a tree that has perfect cover at 10ft which is perfect for that hilly terrain. I rarely go over 22ft, my hoist rope is 20ft and I have a couple of trees that my bow will be just touching the ground after I attach it! Like others said any higher and your target angle/size is not good! So I would say from 10 - 22 feet!