I'm having trouble visualizing what you're doing and what you think you're supposed to be doing. My husband does some nifty guy thing of stepping on the left pedal with his left foot, and then swinging his other leg over the seat while in motion. Looks very cool, and he can even do it with clipless pedals, although it scares me a bit to watch him do it. Is that the kind of commitment to one pedal you mean?
Or do you mean that you balance yourself at stops on both tiptoes rather than leaving one foot on a pedal and propping yourself up with the other? (Like one leg is a kickstand...)