Lovely pics. :) I'm going to have to watch that episode again. The pontoon thing could well be rocking from side to side. The other guys are all facing sideways, so it would be easier to go with the "rock" by shifting their weight backwards and forwards. Jared and Jensen would find that harder to do swaying side to side: it would be easier to stand with a wide stance. Just a thought, but pontoons can be like that, depending on whether they are fixed or floating.