@Tecate250 - The foil i used that Allen first made for me was fairly simply, just three pieces of alloy sheeting with the middle rolled to form the lower part that acted as the scoop & front fender and the upper rolled back so you would not cut your head off if you did a face plant and then the sides where cut to a sort of half tear drop shape to fit the bend and it had raised side ridges so the air had to channeled down the center and then it was all held together with rivets.
Mike over at the machine shop part of CT made it, it was a clean design but by no means complex or hard to reproduce. The alloy one worked much better than the plastic ones, no flex. The big center plastic part would just bend and defeated the whole idea, but AATVA outlawed the aluminum one after Honda protested me so the plastic was what Allen had to bring to market.