If you're out hunting and there's no wall around, how can you tell if your dog's on point or if they think a wall is in the way? Seriously, wouldn't that be for urban fifi, fido and hypochondriacs. For a working gun dog, wouldn't there be other signs. What if they hunt just fine and seem comfortable. Brain surgery, or love 'em and let 'em do what they do. Assuming it's not a joke.