Most know a fairing when they see one, but don't know how it became to be known as a Fairing. In fiberglass work, for instance, fairing is the action of smoothing any surface imperfections and creation of aerodynamic edges and curves. So a Fairing on a motorcycle is to smooth the airflow around the imperfect front end and increasing the bikes aerodynamic aspects. A motorcycle front end just isn't very aerodynamic and has several parts to upset the flow of air. Achieving better Aerodynamics isn't just the shape but includes any surface waves or dips. Fairing sounds better than "Hey, I put one of those new smooth flows on my bike today"
Though now if you look at a Golf Ball you will see plenty of surface dimples to help the ball glide through the air with a decrease in drag as well as scoop air and direct it towards the back of the ball. (Why not on a Fairing I wonder) This action reduces drag by reducing the pressures pulling the back at the ball from behind as well as. Dimples also increase lift when there is backspin on the ball - back spin not desirable for a motorcycle - by creating low pressure above the ball and heavier at the bottom, when this happens you get better lift. With dimples you also have much less flat surfacing in direct contact with the surrounding air so less air to surface contact cuts down on air push. With higher speeds you get more pushing back from the air but with dimples you have less surface.
Would a Fairing with dimples and helmet with dimples increase speed while reducing drag for a motorcycle? Would special racing leathers add to the equation? If I had tons of money and sponsorship I'd take it to the salt flats and put it to the test. If however you read or see later someone is giving it a try remember you heard it from me first.
Why all this though on this? Well, the four of us in our little shop have been commissioned to build a street plane for advertising a restaurant chain. Then as I am always looking for better ideas for existing products, the Dimpled Fairing and Helmet idea came to me and instead of thinking WHY? I thought "Why not'"