full time running catch dogs, or finder/holder type dogs? I am not talking about a dog used with your bay dogs, I'm talking about a dog or pack of dogs that would find hogs and catch them selves without the help of bay dogs to do the finding.
I might be misunderstanding your question, but to me by definition Running Catch Dogs and finder/holder dogs are not anything alike
To me a RCD does not hunt anything by himself, he runs loose with the other dogs, and when they find/bay something he catches it.
Never hunted with a finder/holder dog that was hunted one out. But I have hunted with a pack of rough dogs that went out and hunted, and found the hog then caught it. No need for bulldogs/catchdogs
Now I have a pack of loose baying dogs, ones that won't push a hog, and that will not catch until the bull dog is there. I can tell you that after hunting both rough dogs, and loose dogs. I prefer loose dogs. I don't keep records, but I don't think I lose any more hogs this way than when I hunted with a RCD or with a pack of "finder/holder".