If the brim of your cap or hat keeps direct sun off the glasses, no reflection from them.
If you're using decoys and the still water doesn't have them bobbing, I guess that about all you could do is run strings from them on which you could pull to give the appearance of natural motion.
I've found that the Deep Woods Off does okay on Georgia river-bottom mosquitos.
You're from BATFE? Come right in! I use all your fine products!