Hi dmlocke: You're welcome. I am glad i could be of some help to you.
The only other things i would add are:
Each time before activating photoread the 2 chapters before the chapter you are activating,photoread the chapter you are activating and photoread the 2 chapters after the chapter you are activating. Do this everytime before you start the activation session.
Your trigger words are not limited to headings and subheadings. A trigger word can be any word in the book.
On skittering you are probably looking at about 15 seconds a page.
Also on skittering you are reading the first sentence on every paragraph in the chapter unless you determine that the paragraph has absolutely no value to you or has nothing to do with your purpose at all.
Your purpose sounds on track. The two components of a purpose are the why of a purpose and the so i can do such and such. It seems to me that your purpose has those 2 components.
Photoread4me