You're right, Elmo. As a rule of thumb, your first set of Mind Probe questions will give you the structure of your entire book during your first 30-minute Activation session.
Since one of the keys to Previewing is to grab the key words from most if not all of the chapter titles, your first set of Mind Probing questions will be centered around what each chapter is about, indirectly giving you the first layer of comprehension of your entire book. (remember, your Mind Probe questions are created from your trigger words from Preview)
Then, following Activation sessions will bring you increasingly more detail. Make sure to phrase your Mind Probing questions to bring you to the specifics you want. Continue Mind Mapping trigger words from relevant text.
Also, consider the element of action you need to take to learn/integrate the new information. Review your purpose/outcome statement from Prepare step.
And, if your book is heavily detailed, treat each chapter as a book of its own. Plan to have multiple 30-minute activation sessions on each chapter of a heavily detailed book. Create a Mind Map for each chapter. BUT, make sure to begin first with several Mind Probing questions before SuperReading/Skittering & Dipping, geared towards getting you a layer or 2 of commprehension with each pass.
After a couple activations, you will get a sense of when to shift into Rapid Reading for all the exhaustive detail you want.
I hope this helps. It has been working really well for me!
[This message has been edited by Dana Hanson (edited May 07, 2001).]