Originally Posted by Bill Kapaun
I can't/won't use any kind of clips because I have to keep shifting my feet slightly to avoid knee pain.
I don't want to hijack the thread, but Bill, have you looked into Speedplay clipless pedals? They are specifically designed for people like yourself. They have completely free float (meaning no springback force). They typically allow your feet to swing 20 degrees which will allow your 'non-perfect' pedal stroke to continue without undue stress on your body parts. Then you'll be able to take advantage of the many other benefits of clipless pedals.