In what is touted to be one of the most hotly contested Rolex Sydney Hobart line honours battles in recent history, there's been plenty of onwater supermaxi activity over the last week. So for those looking for some warmup action to whet the appetite while we wait for Boxing Day to arrive, here's a video taster from the Bow Caddy team featuring Comanche duking it out with Wild Oats XI and Perpetual Loyal on Sydney Harbour.