Ouch! I remember that pain. It only took a couple outings on the rocky trails of Phoenix to convince me to at least put toe clips on the pedals. That helped keep the feet on the pedals, but it was so hard to get into the toe clips while rolling, and the clips would snag rocks and throw me off line until I'd finally get the pedal flipped. Finally I got smart enough and brave enough to try the clipless pedals. They are worth the expense and the learning curve. Make the change-you won't regret it!