A recent trick to winter flyfishing depends simply upon the weather. For instance, last winter there was hardly any snow—so little, in fact, that I’ve never seen a winter that dry in the central Rockies in my lifetime. I’d call it a drought. This year’s winter started with parallel results, but finally it began to snow, albeit a couple months later than usual. But once it got going, it snowed every few days—through December & January. By the middle of January, it seemed like the foremost trick to winter flyfishing was simply finding some open, un-frozen water to fish. We did have a dry spell at the end of January through mid-February, but the idea still amounted to finding fishable water.
Does fly selection make a difference? Maybe…research in recent years points out that black, blue, and fluorescents are the most visible colors in deep water; many winter anglers will testify to the effectiveness of patterns in these colors. Biologists do not exactly understand what trout see, but what I find truly interesting is that trout not only see color—they can identify some colors that are beyond human visualization. In particular, trout can sense shades of red and ultra violet that we cannot, and in lower light conditions. I used to think that blue was a nonsensical fly color, since I have not seen blue insects on the streams I fish, other than adult dragonflies/damselflies. However, scientists report that the fish’s capability to distinguish minute pigmentation differences is greatest within the blues.
A lot of experts say that trout seek deep water and become less active in the winter, which may explain (at least in part) why highly visible flies are effective. However, Levi, a buddy of mine who has been ice fishing for years says trout can actually feed aggressively; you just have to hit it at the right time. He also says Pam cooking spray helps de-ice rod guides, and advises to prepare for extreme weather. Cold winter weather might seem like common sense, but as I said—he’s been doing it for years, and hypothermia is a very real danger.
Winter flyfishing can be a great way to discover secrets about your favorite trout stream, and offers a change of pace from the tying bench. Flies tied in outlandish, unnatural colors might be the ticket to get strikes, and may shift your thinking about the appearance of your favorite patterns. Who knows, maybe someday research will show that fishing blue flies will reduce cabin fever!
