In rough water, it is often desirable to have a paddler with steering skill in seat 5 (of an OC6), to allow for the steerer to have that paddler also take steering strokes if needed in some situations. In conditions when the boat is surfing, the stern of the canoe will be so far out of the water that seat 5 will have to keep the boat on course. A seat 5 paddler with steering skill can also assist in preventing a huli by staying on the ama side during a particularly rough stretch of water. In water rough enough to splash into the canoe, paddlers also need to pay attention to the water level in the canoe, report the situation to the steerer, and bail out the water as necessary. Paddlers also need to know how to recover from a huli under the steerer's direction. In a quick turn situation, paddlers at the front may also be instructed to une (poke steer, causes the canoe to turn the opposite direction) or kahi (post and draw steer, pulls the canoe to the side where this is done) to help bring the canoe around a turn quickly. Racing The length of a race ranges from short sprints (e.g., 250–500 metres for the OC1 and the OC12, 500–2000 metres (usually includes turns) for the OC6) to longer events, including marathons (e.g., 42 kilometres). A number of races are raced over distances that far exceed 42 kilometres, including the Molokai Hoe that crosses the Kaiwi Channel between the islands of Molokai and Oahu in Hawaii. However, long-distance races of 20 to 30 kilometres are more common, with shorter 5 to 8 kilometre courses typically being offered to novice paddlers and those under 20 years of age. Longer races involving the OC6 often involve paddler replacements, which involve exit and entry to the canoe directly from the water while the canoe is underway (this is called a water change). Typically, nine paddlers form a crew, with six paddling the OC6 and the other three resting, drinking, and/or eating on an escort boat. Replacement typically occurs at 20 to 30 minute intervals; the escort boat drops the relief paddlers into the water ahead of the OC6, which is steered toward them. The relief paddlers climb in on the ama side as those they are replacing roll out into the water on the opposite side. The