In my opinion any dog no matter what breed if he quits are comes out he gets cull around here. I have had some mighty fine dogs back out when they got hurt pretty good that I thought would have never done that and I give them a second chance thats a big mistake because if they will do it once they will do it again and I aint taken no chances of that dog ending up life long here and me maybe breeding to him and me not knowing if he will do it again so you do it once around here you are gone gone gone I dont give a damn how they are bred thats why I dont give no second chances no more.
Get an 1/8 th pit in ur strike dogs and they will do the trick just enough to keep them in but not catch till the catch dog does they'll never back out.