Originally Posted by myhorsesonador
Most western horses that are moving from basic training to becoming a finished horse are using a shank/curb type bit instead of a direct rein snaffle bit. Most people are not typically neck reining a horse in a snaffle bit, most people that want a one handed neck reining horse are using a shank/curb type bit.
Although it is common for folks to move up from a snaffle to a shank bit in western training, it really doesn't matter with respect to neck reining. Direct rein and seat/leg are used while teaching neck reining, but an experienced horse will turn to 'stay between the reins' without any other cues at all. All our mares neck rein and the two younger ones have never been ridden in anything other than snaffles.