That said wbh, consider moving toward the spot the deer are coming from assuming it's the same direction. You'll catch them before they get to that particular spot. If your on them like you say, moving some distance in that particular direction might really put you in the best spot.
That's sound advice. YOU KNOW he's there! Go get him.
I did this in '07.....only moving 40 yds in the direction I'd seen him coming from on two previous mornings (and yes....he blew at "something" on the second day). I don't think he winded me....but he did see me in the tree. I'm not sure he knew what I was....but the "move" was short and it worked out for me.
Good luck.