I dont know of any that is being used that way but we started them in a pen as a pack 4 of them and they started out baying and chaseing a hog around a 7 acre pen and it didnt take long for them to get gritty to the point that they were catching soon. Started them in the woods at about 7 mths old and turned them in behind a finished CD. @ 10-12 months Max was our CD after loosing a couple of our finished CD's. He has been up to bat ever since. The best thing about them is the manners and handle they have, they dont come any better. You cant make one of them fight. Ive had several dogs jump on max and he just turns his head and ignores them.
Did it take much to get them started? Do you know of anyone that uses one of your pups for a RCD/one out dog?
