I've been working on training Sparky to neck rein for about the past year. He neck reins beautifully when you ask him to go where he wants to go. Not so great when it's the opposite direction of where he wants to go. If I was able to ride more consistently, I think he'd be fine. He will ride off my seat but when he's not getting ridden regularly, or when he's got different people riding with different skill levels, things get slack. What I've done is I lay the rein on his neck first and follow with a light direct rein. I've needed less and less direct rein as we've worked on it but he still ignores it if he feels like it. My job has really gotten in the way of my riding! On the other hand, I can now afford my horses.