For or against bitless bridles, plus the Rydem Bitless?

Simple: People do not like change and they do not like to explore possibilities and they really really hate taking their time to do something they think they can accomplish more quickly (I don't intend to sound mean, this is a fact, even I get impatient and have to remind myself to chill out:-). I have been riding my whole life, and training horses about 20 yrs and was all kinds of excited about training them bitless. And frankly it takes a LOT of time to train a horse to be ridden without a bit or a bridle because he has to actually trust his rider and people want quick answers so they can haul off to the next show, and bits do that. Also development of correct musculature allowing the horse to respond with his own frame to an aid is not a commonly shared part of equine education. Most people including some of my students cannot grasp this concept no matter how simple you make it, they think since the horse is so big, he should be able to do something because he looks like he can, not because he has built up the right muscles to allow him to do it comfortably and easily. I still use snaffles on my horses occasionally but have mostly switched to bitless (I use either a sidepull or an indian bosal kinda like what you've made there, because Dr cook is too expensive). I don't know what went on here yesterday I was not online, but I hope this helps you with understanding and I really really wish the horse world would all try to learn FROM each other because we really share the same pion and if we'd all try everyones' ideas out, it would soon become obvious what worked most universally. We love our horses so much we are afraid to make mistakes with them, but we never realize that what we believe to be 'good' could be 'bad'... I'm just trying to get people to discuss possibilities, not agree. If we dont' share our experiences with each other, we will never learn the endless amount of concepts that amount to the equine species. They are just fascinating!!