i found ipilot link the same fishing river with current and wind as well,
 the ipilot  link  seemed to zig zagged and at times lost as to where the contour was..
i thought it was supposed to compensate for wind and current?
any users  out there have suggestions 

EZM   could you not plot waypopints and get the ipilot to follow your contour or record a itrack?
ds