The McKenzie River dory, or drift boat, is an adaptation of the open-water dory converted for use in rivers. A variant of the boat's hull is called a modified McKenzie dory or Rogue River dory. The McKenzie designs are characterized by a wide, flat bottom, flared sides, a narrow, flat bow, and a pointed stern. The sole identifying characteristic of the McKenzie River dory is a continuous rocker (the arc from bow to stern along the bottom of the boat). It is this constant rocker that allows the boat to spin about its center for ease in maneuvering in rapids.[1][2]