December 7, 201311 yr Author So....... Exactly what were you looking for when you found this???? One of my best friends e-mailed it to me. He's a Lab guy also………..he has one of my pups. Anyhow, we do similar stuff with our Labs when directing our dogs on a "blind retrieve". A blind retrieve is when you send the dog for a bird he hasn't seen fall. You direct the dog with whistle, hand and voice signals. Beer afterward is optional!!!!