For the last two years I have been experimenting with various bridles, both bitted and bitless on five different horses. Although I tend to be picky about the fit of my tack, and read and follow directions well I have noticed various degrees of resistance to rein contact with each different piece of gear. Lately I have been riding two mares (Arab and Arab-Welsh), trying out various bitted and bitless systems. I find that mares often express their displeasure a bit more emphatically than…