I think I kind of understand what you are trying to say. Foot peddling is not familiar to me. Could you explain that? I understand the shoulder thing though.
With the shoulder technique, I really don't think that you should abandon that. Shoulder steering is important for many situations especially if you are doing freestyle. Spins, butters, and jibbing requires you to turn your hips and shoulders to perform these maneuvers. Also, while you are carving, I don't see how it would be possible to do deep and tight carves without the use of your hips and shoulders. For normal skidded turns and just general cruising I can understand just using your feet. That's how I ride when I'm going mellow. I rock my board from toe edge to heel edge with my feet while still going straight. Is that what you are talking about?