With a bad hip it is hard for me to sit without having to move every few minutes. I haven't had any trouble with deer seeing me in a tree, or at least that I know of.

As far as calls, I have bought about 20 grunt calls and have never had any luck with any of them. I hear deer grunt in the woods, but I have never lured one to me with a call. I did call up a nice 6 point once with a summit tree stand when it rattled as I was taking it down. That deer ran in with the hair on his back bristled up and looking to fight.