McKenzie River dory
McKenzie Dory or [Rogue River] Dory is an evolution of the open water dory, converted for use in rivers. The design is characterized by a wide flat bottom, flared sides, narrow flat bow, pointed stern, and the bow and stern have exteme rocker to allow the boat to spin about its center for ease in manuvering in rapids.
McKenzie Dories first appeared on the McKenzie River in Oregon in the mid 20th century. They are specialized to run rapids on rivers having a wide flat bottom for low draft, a narrow bow that is flat, often mistaken for the transom, which instead is pointed. The reason for this is that the rower faces downstream, therefore the part of the boat which first hits the waves must be pointed or very narrow to throw the water to the side. The bow is then widened so that a small outboard motor and/or anchor bracket can be attached. Those unfamilier with the craft would say that they are rowed backwards.
Unlike the McKenzie boats, the Rogue dories are flat as a pancake on the bottom with upward rakes under the prow and the stern. The McKenzies have a continuous rocker. The Rogue river guides needed a boat with greater carrying capacity, and the ability to hold the current. They don't pivot like a McKenzie but they require less effort when rowing. The classic Rogue River dory with a nearly full deck, is a favorite among guides on the Colorado River. The high prow, great carrying capacity, ease of rowing makes it the prefered Dory.
River dories are mainly used by fisherman who wish for more control of their boat than that which provided by a rubber raft. They are reasonably safe yet river conditions must be kept in mind at all times. A sudden thunderstorm miles upstream can send large amounts of debrie down the river.