A good catch dog is as hard to find as a good cur dog now. Raise and breed em just like you would your cur dogs and cull hard and you won't have to buy em off the dog trade.
x2
x3...back in the 1980's most of the pound pits made catch dogs...last two have bought were culls...
back then they were not far removed from tested (pit) dogs...just like any other breed. if not tested in a few generations the courage can be bred out just like any other trait that is not tested and culled...