I picked up some extra courtesy room when I added a strobe to my left drop bar. I never ride without it. these pics are from past bikes but gives you an idea of how I mount it. it is the same PBSF that I have on my rear rack. so the two in conjunction with each other do a nice job. there must be something about the extra strobe up front that lets them know it's not quite time to zip over to the right yet.