I agree, polarized glasses are extremely useful. I'm wondering if the ones with lenses designed for fishing, like the Smith Optics Chromapop lenses, or the Costa de Mar 580 lenses, would work better for me. Right now I wear prescription lenses, and then Coccoons "fit-over" polarized sunglasses. I don't think I can see fish as well as I WANT to....or maybe many of the waters I fish most are just too turbid?
I've actually flyfished specifically for carp twice so far since the ice melted off the local waters. I saw mud clouds both times, and bubbles coming up as well today during lunch. They are definitely active and eating. It was windy enough that I wasn't sure if I had strikes or not. I think I did, and missed them.