I hear ya... My favorited dog advice is exactly that, a good dog is a tired dog... but it sure helps when they have a companion. That's a beautiful and very capable dog (Rhodesian Ridgeback) ... On that note I am a pretty competent dog trainer but I know my limits as far as training skills, time availability for training, exercising and life style, some breed I simply wouldn't get because of it, I wish more people would have the same logic, it would result in less dog being put down or end up in animal shelter.
Brought my Lab bird hunting last week, I later check and she ran for 16km (9.9miles) (she had breaks throughout the day). I was going slow on a quad (walking speed) and she was so exited trying to pick up scent that I couldn't tell when she was actually pick up tracks for most of the journey. I though she would be out for at least two days after that but no she was lazy for the bigger part of the next day and that was it. I tried to get her on the quad (usually has no problem with it) since I knew she has been running for a while but no chance.