Elicit (or at least notice) a useful state and do something consistent. A look, a sound, a touch, a gesture or just point....
but not normally to yourself if its a less than useful state.
I learnt a lot from the delightfully titled
advanced anchoring and other sneaky stuff by Tom Vizzini and Kimberly McFarland at
Essentails skills. At the time it was a Video set but you can get it on DVD. They do workshops purely on anchoring.
And there is quite a lot in Richards Trainer trainer / Charisma enhancement,
Interested if anyones come accross anything else.