While we're on the subject of breathing, can anyone suggest any tips for breathing on both sides? I learned to breathe to the left, and if I try to breathe to the right my stroke gets out of whack and I'm flailing like I don't know how to swim. I don't seem to be able to figure it out on my own.

I'd like to be able to alternate, because my neck gets stiff turning only one way, and because breathing to both sides is on my list of "Fifty Things to do Before I Die."