Pup is 11 mths old ff, cc, tt, through swim by. The pup is hard as nails, more fire than most can stand on marks. He runs as hard on marks as he can but seems to have a who cares half a$$ attitude on cold blinds. I've been using orange bumpers and dokens on his blind work. Recently thought about shackling pigeons just for his blind work to build momentum. Any thoughts, again he is new to cold blinds, we've done birdboy blinds, wagon wheel drills and he does fairly well, but send him out without the visuals he seems to lose all confidence.