Dry-fly anglers are also limited by weather and river conditions. I'm not. Conditions that can kill dry-fly fishing -- such as slightly off-color water, increasing water volume, and heavy wind -- are perfect for my type of fishing. A big hatch is also a great opportunity to plumb the depths with an outsized streamer because big fish may move in to eat smaller fish that are sipping surface flies. As a result, I've fished with big flies in streams large and small, ranging from a tiny tributary of New York's Delaware River to Montana's Yellowstone River, and my collection of large, motley flies never fails to roll at least one considerable trout.