That is the truth! I know how little training people do when I hear them say things like "My dog is just impossible on a leash - and I took it to obedience class!"As much as I stress training with puppy buyers and classes, and as much as they promise, they do not all follow through with it.
If you consider one obedience class all the training your dog will need, get a pair of waterskis. You will need to wear them while you hold onto the leash for dear life.