Bay and Shoot.
Dogs bay. Hunter shoots. Dead pig. Safe in my mind. I have only shot and killed 7 or so hogs with my dogs but I have never worried about hitting one of them. You arnt shooting from 80yards. And if you have to work too hard at getting a clear shot your dogs shouldnt be getting shot over in the first place.
When the bulldog hits the pigs the dogs catch with them. That is when I think most cuts happen. When the hog is shot it drops. End of story. Your friend out near me(TG) shoots over his dogs. It has worked for him.

We have hit hogs with 30carbines,7mm and 30-30 and havent had a problem when them being alive when they hit the dirt. I like dropping bulldogs thats why I dont shoot over the dogs much. But when I am alone I will bring the gun. I feel that shooting over the dogs is mroe safe then using catchdogs.