Indigo I am not an expert (not even close) but I will try to answer by telling you what I did (or do).
First, I think you got photofocus correctly and yes, you should be able to see the whole of the book (with 3 pages - one being about 1 inch width,the blip). What I used to do until I could manage to keep my photofocus was to sit in a chair, keep the book on my knees and focus my eyes on the floor while keeping the whole book in my vision (and turning the pages of course). Otherwise I used to loose the the blip page. Right now I can photofocus in the centre of the book without loosing it while turning pages.
As far as trigger words is concerned, I use headings, sub-headings and words in bold or italics. If you find that there are too many in a page just select a sub-heading which encompasses all.
Sample questions are very useful. That's what I do. Before I preview and before I activate I always try to figure out what I am looking from the chapter.
When to dip? When you see an answer or something relevant to the questions you've read before starting to activate. From the first activation session just try to get a feeling of what the text says. Usually I don't get a lot from the first pass (but then it's been just a month or so that I am doing this). After the first pass I go back to my questions and see what I can answer. Usually not a lot. Then I start my second pass keeping in mind the questions. Usually by the end of this pass I have grabbed enough. Specifically what I found to work pretty good with me during activation, is to read the first paragraph of a chapter, then the first sentence of each paragraph plus what answers my questions and then the last paragraph of the chapter. If I understand that a paragraph or a page contains nothing of interest to me I just skip it.
I also find it easier to do the whole process on each chapter of the book separately. Takes longer but if I try to regular read, after 10 minutes either I don't remember anything or I am not concentrated.
Other people might have other ways or see things in a different way. Experiment to see what suits you.
I hope this helps you.
By the way: I am learing the system from the book and from this forum only.
[This message has been edited by Yiorgos (edited October 17, 2001).]