do it in a snaffle. A curb bit is useless without the horse being efficient in neck reining. Its actually hurts more than it helps until they neck rein.
I set up cones in a square and neck rein all one direction around the square then go back the other way. If she doesnt turn on the neck, I direct rein very lightly, increasing pressure until she begins then I release immediatly. Do this while giving leg cues. Some are qucker than others.
Be the kind of woman who, when your feet hit the floor in the morning, the devil says "oh sh*t she's up!"
RIP Sully and Jetta (4/24/11 lightening storm)