PhotoDaVinci, I think you may have made one mistake in saying that the photofocus state was hard, if you say that it is, you're setting up a barrier for your self.
Just like with the tangerine technique, you don't have to think about the four corners the entire time you're photoreading. You can just pause for a brief moment on the page you're starting, NOTICE the four corners and begin. If you only take a moment to notice the corners are there, you know they're in your periphery, so you don't have to worry about them, just stay relaxed.