The discussion is regarding winglets but the Aeroflow lower shield does fit the bill....for what it is worth
I know this is a pricey item but i have had several different windshields on different bikes and this is the end all for shields. Clearview, Cee Bailey, Tourtech screen, and laminar lip
Aeroflow is the best solution to any issue there is for windshields. The entire thing cost $601 which is painful but I could not be happier. The design eliminates the buffeting and there is about a 60% reduction in air to arms .
I have yet to ride in heavy rain to see how water runs off. I also would not invest in the thing if I was a 70/30 off road kind of rider.