We train all our dogs and mostly use positive training methods. I have successfully boundary trained Rotties, labs, & Spaniels. The Blue Tics were spotty because they follow their nose and are easily led astray. I am 2/4 with the hounds.
I am not a fan of shock collars or choke chains and believe that if you need them you are probably doing it wrong. Shocking the dog can induce the behavior you want but it crushes their spirit and may lead to other negative behaviors. Massively expensive training "programs" may work but it is the human that really needs the training, not so much the dog.
In Switzerland and other areas of Northern Europe dogs often walk off leash and are continuously checking in with their master. It can work but will raise the ire of most in the US where leash laws are standard requirement.
This guy gets great results using very similar methods to ours. I recommend his vids to anyone wishing to get maximum control of their dogs. His German shepherd was an awesome dog.
https://www.youtube.com/watch?v=elKsANmYVTI