It really sounds like you need a trainer, I see this getting very dangerous, very fast. I don't mean to sound accusing, but it really sounds like you're in over your head.

Pulley rein: http://www.youtube.com/watch?v=yFt-yJhVZg8 . It's a certain way of moving your reins, I guess you'd call it. Not an additional piece of tack.

image"Avoid loud and aggressive persons, they are vexations to the spirit." - Desiderata, Max Ehrman. 1926. image