Tying up my horse safely?

try tying him with two lead ropes on two separate strings. have one lead rope slightly shorter than the other one so that when he does pull back he will only break one and will therefore not get away. Make sure you retie the lead rope after he has pulled back just in case he does it again. He will soon learn that he wont get away and will hopefully give up. he sounds like a quick learner. Good luck