In theory, fly-fishing is a simple sport: Pick a body of water, choose a fly-fishing rod, select your “fly” (or bait), tie a secure knot, cast your line and, hopefully, land a fish on the other end.

The sun is shining and the weather is great. But amid days of traveling, barbecuing, hiking popular trails and boating on the Dillon Reservoir, it can sometimes feel like summer in Summit County lacks ...