Company works well for wind suckers - check out the equiculture website, I'm pretty sure Jane has written about windsuckers there. Wind sucking is a stress response and they don't learn it from other horses, they develop it early on in response to stabling, mostly. Being in a herd lessens the need for this response and can extinguish it with good management. If you can't get the horse socialised, then you may need to look at some other fencing options that will stand the punishment the horse will give it!
I had a windsucker and he didn't do it much when he was in a herd, but it's all he would do when kept on his own, or in a paddock with just sheep for company. I had a collar with a metal hinge U on the throat bit. Not convinced it made any difference to the damage he caused, and it doesn't teach them to stop windsucking or crib biting, it just teaches them how to do it within their new constraints. It's like thumb sucking or hair twirling in humans!
Once a wind sucker, always a wind sucker, even if they stop doing it, because stress (a new home, new paddock, etc) can bring it on again. There are no 'cures' as such.