Very sound advice Jimmy.....I agree with you. I finally learned to stop trying to get my dogs to do what I think they need to do.....they showed me that they know more about finding and baying a hog than I do,....lesson learned.
My dogs do just what you spoke of when there aren't any hogs around....they make loops and check in, do it over again, and again, and again and finally they realize that it's futile to spend more time looking, there are NO hogs around where we are.
Of course when you get close to our age you just slow down naturally.....

Which is sometimes a good thing.