I have an 11 year old TB who I just started training. I have been training him for a year. He spent 5 years on the track and 5 years after in a pasture being ridden once a month. He Has a bad case of A.D.D. He LOVES jumping. He's vary fit and athletic. He is ridden in a D ring snaffle but on some ocassions I ride in a simple snaffle pelham. I am an experienced rider but I haven't been able to stop him from rushing 1-2 strides before the jump. I have tried shutting him down when he tries. I have tried haulting in the middle of the line, making cirlces in front of the jump, canter in trot, cavelletis, gymnastics, and walking a couple strides in front of the jump. Please gave me your suggestions, advice, or tips.