I am making the Rudder and handle (tiller) for the Grumman sport boat .Included is  a  pivot  handle (tiller) that  can be  used either  pivot  or  locked   to make it  4 foot  depending  on where you sit.  The  rudder pictured is  a direct  fit  for the sport  boat  i have  a bracket  that can be purchased   if you have  the flat  stern canoe   . I am currently working  on a  bracket  for the  double  end canoe  mount ..  I also am making the  Mast step  that  bolts to bottom , and  the upper thwart (upper mount for the mast ) ,, Wooden  Lee boards, lee board mount  .  free shipping let me know any questions you have thanks Barry