What do you think of this device?
http://mashable.com/2013/09/08/run-n-read/
Clips onto your body to make it easier to read on your tablet while you run on a treadmill. I only walk on my treadmill and don't have a problem reading while walking, but I do prefer to jog in my pool whenever I can, and just the other day I was pondering how I could rig something to let me read while I water-jog. Round and round in an 18' circle can get a bit boring. I guess this wouldn't work for that.
I do read in the pool with a Lifeproof case on my phone, but it's too bouncy to read while I jog, and I need to move my arms. Considered a harmonica holder but I think it would be too close to my face not to mention too bouncy. So for now I stick to reading a chapter as reward for a certain goal.