"Shooting at where they're gonna be" is a lot easier with something already in motion than it is with something that will PROBABLY move SOMEWHERE. Doing everything you can to not make them move is the best bet, and the only way I know to do that is to avoid alerting an animal prior to, and at, the shot.
I wish the best of luck to any bowhunters reading this and truly hope you don't have to blow as many opportunities at a "buck of a lifetime" as I have to learn these lessons.
