You're working more off your legs and seat, ideally. A bosal isn't meant to have contact or rein pressure on it.
One of the biggest things with bosals nowadays is that, because of mass production from companies like Showman, people don't realize how tricky fitting them can be. Your buttons need to be the proper spacing apart, and your mecate has to be tied properly, with not too much and not too little space between it and the jaw.
Another thing to watch is how the bosal is hung; a browband, or really any headstall that isn't a plain hanger, changes the signals.
I know how it works I wanted some feedback from someone who rides with it. Thank you thought!
it is much stiffer than a rope halter, but does not have as much of the twisting leverage effect as the hackamore