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.

Key Takeaway: For this guide to fishing rods and reels, our writer interviewed professional guides and tested gear across lakes, rivers, and coastal salt flats. Our top pick for the best all-around ...