I recently received a new Idasailor rudder for my M17. The rudder blade length, while probably adequate, just seemed a little short to me. I expressed my concern to Joel at Idasailor who immediately offered to send a longer rudder blade at no cost. If you are considering ordering a rudder from Idasailor, rest assured that any concerns you might have will be taken seriously by Joel and his crew. Jim Poulakis M17 "Spirit" (equipped with Idasailor kick-up rudder)