Hey There, I don't know if I can offer anything insightful or constructive in this discussion, however I will try my best (I'm new tehee)
Well I find the hitting argument causes more problems then it solves. I don't follow a particular way of training, and I currently am not a fan of the parellis. This is due to the expensive prices, Pat riding with hackamores ect. I mean if they wanted (as they say) to create a more harmonious way of interacting with the horse, and "save it" from all the mean was of riding and training like hyperflexion and all that business. Then why don't they make there training techniques and/or equipment more widely available to even those who arent as financially secure. Personally I see it (at the moment anyway) to be a big money making scheme (part of it at least).
And with in response to the hitting thing.. im sorry I didn't read it fully there was a lot to read o.O. I have trained a couple of horses now, including a stallion and a Ferrel abused pony and I have never hit one of them. Making horses scared or forced into doing things is no way to go about doing it, whereas changing the way you stand and hold yourself around your horse, invites them to become more conversational towards you. Also taking yourself down to there level and behaving similarly to them will intrigue them and also give them the right to say when enough is enough. Truly and honestly this is what I believe NH to be about.
Hope this was insightful, if not then ah well not to bad for my first post ^^