I do not want my dogs working the back end of a hog at all, I want them to get ahead, square up and stop them at the head of the hog like a stock dog should.
I always felt like the dog couldn't get to the front end when at a hard run and through the thick brush...I like to see the dog grab the back end and sit down like a good roping horse does...then let go and catch an ear and work the front end...but a lot of good kemmers when working alone will work the front end and as the hog tires circle to the back and start catching the back end...not saying it is the best way but it works...