i say take them right away, especially if you have an experienced dog to guide them. imo, that is one of, if not the, best training aids. (an experienced dog.) if you do take them young, just be prepared for the headache that comes along with it. a lot of people get frustrated when their dog acts out in the blind. you can't blame a puppy for being a puppy. if that behavior is not something you want to tolerate, then leave the dog at home. if you (and your hunting companions) can handle it, then i say the sooner the better.