Abstract: Apparatus removably mountable between the gunwales of a canoe and supporting a pad containing frame assembly therebetween. The frame assembly serving as an extra seat in a first position and as a carrying yoke in a second inverted position. In its various embodiments, the frame assembly mounts to the canoe gunwales in removable locking relation to permit reversal of the frame assembly between its seat and carrying positions. In the various embodiments, the locking mechanism comprises: spring loaded, notched, tubular clamps; channeled nylon blocks; pivoting cantilevered arms; and mating keyways, lockbolts and lockpins.