Where I'm from, a few of us would always hunt together, no more than 3 cow bred cur dogs on the ground at any given time. We would all bring a dog , sometimes two, and switch them out on the bed or deck during a hunt. You were expected to have a "hog" dog. This was a dog that could wind, find, stop, and attempt to hold a hog on it's own. To us, any thing else was just a dog. I don't care if a dog could strike, wind, trail, find 100 head in a day, if it could not stop and anchor them, it was not worth a piss to us. Just a regional thing I reckon.
Who needs an anchor to strike and keep a hog bayed/ in 1 spot? The anchor walks to the bay with me on a leash... A strike dog is obviously a dog that will find and bay a pig, being open has nothing to do with it and usually is frowned up on in my hunting circles. Every strike dog ive had would rig, thats what dogs do that smell pigs imo. Find dog should mean the same thing ...