I think there are different levels to getting busted. If he smells something out of the ordinary and
veers away from you, that's one thing, but if he definitely saw you and bolted, he will know
where that stand is and either avoid it or be very wary (study it for movement).

If it's that good of a buck, I would try to pick a spot 50 yards or more away on his line of travel
and set up again there. If you saw him at sunset, I would set up during the day and hunt it that
afternoon.