In my experience those big guys move according to the wind, they walk into the wind so they are always downwind of where they are headed. May be a little different out here in the plains vs. high country, but I hunted a big mulie for almost three weeks because of what you are talking about (everytime he left his bed him and about a dozen other deer would walk with their nose in the wind, and usually not until it was too dark to try anything. Finally after 20 days, I caught him moving away from his does with about a 30mph wind in MY face, he bedded and I was able to stalk real close and wait him out. Ive had good luck on real windy days, bc it hides a lot of noise and is usually more consistent in direction than calmer swirling winds allowing me to move. Anyways, I think you really have to be patient sometimes on those big guys, bc they don't screw up very often to allow you the chance to get in range of them. Just keep an eye on them and be ready to get aggressive only when the time is right. Just hope he made it through rifle season and he will be bigger next year.