Hi Diane,
Don't forget that Teach-Okay! can be used for so much more than just teaching a specific concept, but can also be used for discussion, and to reinforce directions, as well as debate and sharing opinions. You'll be amazed as you use it more and more how you can fit it into EVERYTHING. You'll get a better idea of this when you're at the conference and you see Biff use Teach-Okay! for a wide variety of things.
You mentioned lit circle questions....BEFORE you discuss it as a whole class, you give them short bits of time to discuss the question using Teach-Okay! Then rope 'em back in with Class-Yes! and share some responses. Then you can build on their responses with MORE teach-okay! by asking them to tell their partner what they think of what ________ said, whether they agree with _____________ and why, etc...
With gestures, remember, too, that there are academic gestures, and there are listening and speaking gestures. Model for them the kinds of gestures people use when they 'talk with their hands', and the kinds of gestures people use to demonstrate that they hear what the other person is saying. This way, when you're having discussions that don't necessarily tie to a specific, formal gesture, they can still use gestures as they teach each other.