Slim, I have been working to make a dog of mine less gritty in the pen and what I've done is tie the hog by the hind leg on one side of the pen (short rope) or on a stake if out side the pen, then i use a 10 ft long lead on my dog hooked on the back of the neck and down the back to his mid section loop under him and back though so when he pulls to hard or i pull on the lead it tightens up on his genitals, when he goes to catch just give a little tug and he'll back up I also use a voice command just before i tug and when i tug on the lead,( works like a shock collar with a warning beep). my male has picked up on it real quick, i almost got him where i can voice command him loose or tight in the pen. this may not work for you but it has for me so far.. Good luck, this technic is very slimmilar to force breaking a bird dog to retreive when commanded to flush.

i think that some body needs to put a rope around your genitals in the same contraption and send you to work and when you dont do it like they want say something and then pull

like hell then you could see how it feels and you might do what they say but you wont like it very much I think you need another method of training
JMO, But the dog will learn when he can get rough and when he can't so it would be better to get a different dog if you don't like his style. It is kind of like dogs that have bayed in a pen and won't bay in it after a while but will find and bay hogs in the woods.