Somebody on a video said they would be about 20 yds downwind and that your setup should be 20 yds downwind from that. I assume they were bowhunting.

I don't know if that's true ~just hearsay from a television show.

One thing you can count on most of the time... When you think you've got him figured out...he'll do something different.
When the rut is in anything can happen.

If you knew where his trail is you could settle in at your favorite shotgun distance.