My horse has reared on me once, in the very beginning, before we did any roundpen work, before she trusted me as a handler or had any respect for me. It scared me enough to think I would be doing a disservice to my horse if I didn't work closely with a professional who could guide me, schooling me, not my horse. I began to absorb all the information I could, building my own little library. I think, in this is IMHO, that any horse that rears, be it occasionally, or everyday, is a ticking timebomb until the business of sorting out who is the leader is addressed. There shouldn't be a doubt about feeling, or truly knowing that you are higher on the pecking order. With my horse, I could immediately FEEL when she acknowledged this. Sure, you could spend years placating the horse so that he never rears or kicks again, using correction or intimidation. Until respect and trust is in order you won't have the horse's mind, or his willingness to work for you. I would recommended watching the "Ground Work" DVD by Buck Brannaman and "Back to the Beginning" by Ray Hunt. Or anything by them. They truly understand the importance of establishing or gaining the respect before moving any further. You'll find you just can't move much further without that, anyway. I've kind of adopted the belief that the horse kind of trains itself, because nearly 95% of the problems that have occured during our training, my trainer corrected in me first, and right after I corrected myself, we just naturally progressed. Good luck, and if you love this horse, do what ever it takes to train her right, regardless of the time it takes you to get there. It truly has been one of the most rewarding experiences of my life, blood, sweat, smiles and tears!