Ninja,
The key to the rcd which stands for running catch dog, which means the dog finds the hog and then catches it, is to use cut collars and vests and get to the dogs as fast as possible.
When I am referring to a RCD, I am talking about a catch dog that is running loose either near me, or with the strike dogs. bulldog, cur, or any cross...Just no bay, all catch. I expect the strike dogs to find the hog, and the RCD to catch the hogs.
I think what you and I are calling RCD are two different dogs... difference is yours finds hogs, mine does not.