It would be better to work Toro with a good helper doing what you are right now and you are working the line David.

My only comments are that head shaking/thrashing and turning to the side are breed traits, strong ones. They counter their prey/opposition(boars/bulls) with head shaking. The turning to the side is to gain control and throw the prey/opposition off balance. I do agree though with Mike that he does buck around a lot. Kind of like a little rodeo dog. Either he is not fully comfortable with being face-to-face/feels pressured, or he is trying to reanimate you and get the fight going again. One thing about bulldogs is they LOVE TO TUG and love movement and the fight for an item.

As I believe Mike said, in better terms... He seems to be trying to reanimate you and you oblige. In the video when he shakes it seems to throw you off balance a little and you begin motion/action again, you are rewarding the head shaking by giving him the fight/tug that he wants.

If you want him to stop you will likely need the help of an experienced decoy but I personally don't care much about head shaking because the AB is my chosen breed and I don't do SchH.

Being an AB person he seems to be biting fairly well, the short muzzle/vid quality makes it difficult to tell but it does not appear to be a shallow bite for an AB. Not full to the max (crammed between his molars) but not "bad". IMO from a greenie.

David,
I'd lose those big rocks. Your dog could get injured during training and then neither of you would be happy.
I'd reiterate about keeping that line tight and also you can work the dog around the post immediately after the bite and that will give you more control over the dog.

Thank you Jennifer and Michael. Yes I believe he is trying to reanimate me, that's his favorite part, the fighting. He is a real shaker. I can't tell you how many times I've had to reinstall the handles on my bite bar. I was caught off balance trying to be still and clam, I was trying to get him to calm his grip. I never even considered my timing by rewarding him with the fight at those moments. Thank you for pointing that out. Michael the rocks are gone. In fact I moved them shortly after that session same day.