Consider artist type sketchpads with spiral binders. I've noticed there is a size in the US that is larger than legal but smaller than A3 I found this to be the perfect size when I took my classes and I used markers. If I would have used Gel pens I would have had even more room on them. You can take the mind maps out of the sketch pad, hole punch the shorter side and fold the excess in.(It would fit in a fools cap folder that way or can be moved into your normal folders without excess overhang.
I think you'll find PhotoReading easier with that attitude you chose to develop. It's always easier if you allow yourself to play and see.
Alex
