The back corner of my property has a similar situation, they have a GSD and if it gets triggered it will bark for two hours without moving. As some have said, when he fired up it could mean deer heading your way… but more often nothing happens, I assume If there were deer they went the other way. His bark is so loud and obnoxious nothing moves "towards" it, so essentially your hunt is over. I've never seen a deer more than 5 minutes after he fires up. If your stand clangs at daylight and he hears it down the hollar, may as well pack it up and head somewhere else