I mounted a small heater under the seat with a opening cut out for the air to flow. It blows right on your feet and gets very hot, so most of the time I have the cowl vent open to let in a little cool air. All this air moving around I have never had any fog problem. My heate is eather hot or not on, it has no temp adjustment, but it was small and easy to mount so I live with it. Joe
