Michelle mears use to call this type enduro dogs.Crosses like bird/bull or any straight breed that caught.  Dogs that had a hell of a good nose and would hunt deep, with all the speed and strength and then lock down, no bay.  You can usually hear the hog grunting/squealling.  I don't lose as many hogs and I don't need but one dog.  The negatives are the smaller hogs can get chewed up and on the big hogs the dog could be killed.  But I haven't had a dog get killed yet, cut down, but always recovered, and what I like is I don't have to bother leading a bulldog or the hog breaking bay because their is no bay and he is the bulldog, makes it simple.  
i agree totally.it was nice speakin with u bout ur bird/pit cross