Top cure for bright flashes of light reflecting from your fly rod while casting is buy matt finished rods over gloss. Yes they might not look as nice, however your catch on clear water will go up though! OK so you like your rods to look really nice and flashy? Minimizing false casting is good for several reasons, in this case it will reduce rod flash. When carrying your rod, point the rod behind you rather than in front. As well as saving your rod should you fall, light reflecting off your rod will be hidden from fish upstream of you.
Net result, more fish in your net!