Windvanes on Ketches or Yawls
We have a Cheoy Lee Offshore 41 Ketch and are seriously considering a Cape Horn windvane. The mizzen boom extends well aft of the transom. I have a question for ketch or yawl owners: does a vane have to be mounted aft of the mizzen boom? Even if mounted so, does the air draft off the mizzen sail adversely affect the performance of the windvane?