I found this bear in an extremely high wind and there was not a chance he could smell me. I advanced until he started to move away going up hill. I yelled at him to get his attention and when he looked at me I retreated, at that point he turned back toward me and came back to his original location. I was unarmed and begining to get nervous so as he lay down on his tummy spread eagle, I retreated and left him alone. By my estimate, we were 35 yards apart and he was good with that but gave ground if I got any closer.