I agree bridless riding is a result of good training. If you can not get your horse to work off your legs and seat with little to no reins then you are not ready. If you can not drop your reins and get the horse to work then again not ready. I personally drop reins a lot when I am working my horses. This is a good way for me to make sure I am out of my horses way. It also helps me concentrate on what I am doing with my seat and legs.