Thanks for your suggestions! I have been planning on investing in a twitch for a little while now. I will also try the chain under the lip.
I have been trying to get him used to them, but I have never had such problems with it as I do with this horse. The last time I tried to clip him, I had two people standing on each side of him trying to hold him and me standing on a chair. We tried putting a chain on him, giving him ace, and much more. He is really a pain and since he is so big and strong, he can pull all of us right off the ground. He ended up hitting his head and it was all so dramatic. Now he doesn't want me to touch his ears, brush his ears, or clip his bridle path because he thinks I will clip his ears and whenever I try to he flips his head around, picks me up off the ground, and gets upset.
It sucks because we show almost every weekend and he really needs to be able to handle it. This is really like his only vice and it drives me crazy.