gen, as far as the deer looking up at you, i try to find a tree that splits or that has some limbs or a group of trees that will provide cover, i also try to find a tree that has a small sapling close to it and after i climb to desired height i throw a rope and pull the small sapling to me and tie it to the tree l;m sitting in to provide cover, also i try to find a tree at least to same dia as i am or bigger to hide my silouete, never pick a tree smaller than you are, i also hunt climbing stands so if i see one over on the next ridge i can move for the next hunt,