As Paul Scheele, mentions very well in the book that while reading electronic documents you should make the same decisions to preview, photoread, super read and dip, skitter, and rapid read similar to what you would do with regular books. You just need to have some modifications while PhotFocusing and Page flipping.
During photofocus, as you will not be able to see the blip page, therefore try having a soft gaze at the centre of the monitor screen as text flashes. While page flipping use the up and down arrow keys rather than scrolling by mouse.