Here's another one of those subjects that comes up every year or two on landracing.com. Six or seven years ago Vetter had a bike at Bonneville with dimples all over the rear of the fairing -- might have been on the front, too, but I don't remember. No, I don't have any data nor run speeds -- but I remember seeing the odd appearance and paying enough attention to bring it to mind when I read these posts. Maybe someone else has more information.