I took a screen shot, but there's probably no point sending it. I had to set the screen up to full screen, which Cocoon needs, but it didn't completely fill up the screen. It was shifted over to the left, and had a large white strip to the right.
Note that I didn't use an iPad, but Android. I could try it out on my iPad, but it's a lot easier to transfer from PC to Android, than PC to iPad.
I would have liked Cocoon to centralise the image, and add vertical black strips either side.