Nice Bama hogs! Those things are big enough to be from Texas!

It depends on the type of dogs you are using. The less the better in my opinion.
For me and the type of dogs I use, two to three is a good number. Any more than that and they will start catching out wether I'm there or not. Not a good thing on a big hog.
I have seen 5-8 good bay dogs pull it off ...