Clonidine is actually all I use to kick. I haven't really used methadone, but I am talking about heroin and oxycodone mostly. I've been using 2-5 days a week since I got back from school less than a year ago, and I've kicked about 4-5x for a few weeks here and there, and clonidine is my go to drug for that.
It makes me pretty tired, so I take it at night. It really helps with RLS, but I also get pretty sedated from just one 0.2mg pill so I can actually sleep. It helps a little with the anxiety too. The only bad side effect is that I get dizzy upon standing, and my arms will fall asleep when my hand is elevated for a while, so it definitely lowers my blood pressure.
I'm always busy so can't just stay in bed for 3-5 days kicking, so I can only really use it at night. If I could just stay in bed for those 3-5 days and take a pill 2-3x a day instead of just once at night my detox would be fine.