I tried
Triple Your Reading Speed by Wade E. Cutler. The focus of the book was on expanding your peripheral vision. I practiced, but could not get to be able to read at the level I wanted. I improved speed by not subvocalizing everything, and expanded my vision, but not too significantly. Perhaps I gave up too soon.
I listened to the overall idea of photoreading. It sounds like it could work to some degree, but not worth that price tag. I think the idea to have a goal going in before you're reading can allow you to tune out the fluff and retain what's important to you.