In my opinion....if a hog is going to run....then it is going to run. A dog 'opening' or 'yipping' behind that hog will have an influence on when the hog chooses to begin its run or how hard it decides to run.
The hog may hear or scent the dog 500 yards back and have a good lead or it may hear or scent the dog 50 yards back. Obviously the amount of ground the dog needs to make up can be a factor on a running hog.
It is ultimately up to the dog to work the track, put pressure on the hog to stop and hold the hog. Otherwise the hog may trott all day long with a silent or open dog in tow.
I have a dog that 'yips' on track. Sometimes it is a lot and sometimes he is silent. I have places where the hogs run and others they dont run 100 yards. I will sell this dog for $1,000,000.
