I have a picture of an Arabian stallion who showed and won Sport Horse National in Grand Prix, and has also won national championships in Intermediare (sp?) 1, and Prix Saint-Georges, and he is shown with a running braid instead of the traditional white taped braids. I personally won't cut or pull my mares mane, but will put it up nicely for showing, a lot of different shows at all different levels do actually have a sub section for baroque bred and Arabian bred horses that traditionally have long manes, and what type of braiding is acceptable for those breeds, though you can obviously cut the mane and braid it up the traditional way if wanted. I actually need to become proficient in a running braid, even if its crappy at the barn at least, because it gets all tangled up in the reins when I'm riding. Her mane is about an inch lower then the bottom of her neck. And thick. I should probably stop putting MTG in it, because its going to become unmanageable if I don't lol.