Frenchy, one thing I've toyed with in my mind, but, have not tried in practice is a reverse pitch fan and a three way switch to reverse polarity to the fan motor. This could be operated manually or automatically or turned off.This would allow the electric fan on Susan's Wing to blow the heat out front and away from her while sitting at a light or in a traffic jam. You would have to reverse the fan once you got rolling or else the engine could overheat,otherwise, it would stop airflow transfer.You could use a relay in conjunction with the speed sensor for the turn signals to engage proper polarity while driving at slow speeds. Fans are not as efficient in reverse, so you would have to choose a fan blade that would give optimum air flowin either direction turned.
On most Wings I've seen the fan typically does not run once you get the bike rolling at a steady speed so this idea may help keep Susan from overheating and I'd be glad to help you lay out the electrical if you needed the help.
Regarding the helmet ride. Let me just say that I'm glad you went. Wish we had a chance to repeal the helmet law over here, but, I can't see it ever happening due to the stubbornness of the legal system.