I have learned never to tie Zum when I am bridling him. He will feel trapped and be more apt to resist and pull back. And I have also learned to only remove the bridle when Zum’s head is lowered and he is relaxed. I don’t ever want to pull the bit out of his mouth. I rub on his forehead to teach him to lower his head. Then I wait for Zum to release the bit by opening his mouth. I can also hold a treat below his nose so he has to reach down for the treat.