Graham m. Or anyone interested. I once ran a field test with 2 handlers, spaniel and Labrador over sugar beet. I had a launcher over a brow and had the handlers keep there dogs at sit. I then asked the handlers to retrieve the dummy whilst the dog watched. Well gentlemen, I think you you know where this was going. How to send a dog for a retrieve when you you had no idea yourself. Yes. I agree, dogs nose and all that,but the point was, did the handler have any idea.?? I'm clearly blathering but to be honest, it tested the handlers.