Marciah-
After much thought on this topic I finally invested $10 in an old fashioned book stand.
I bought the kind with arms that swing out and I prop the book up by placing one arm inside the front and back covers. This hold the book in place at the proper angle, while keeping all of the pages free to turn.
I noticed immediately that I was no longer concious of worry about the the position of the book and was able to simple focus on PhotoReading..
Good Luck