Fly casting technique

I learned to teach casting from Mel Krieger, whose book The Essence of Flycasting shaped how a generation of instructors think about the cast. This guide covers the fundamentals I teach every student.

What is fly casting?

Fly casting is the technique of using a flexible rod to throw a weighted line, which carries an almost weightless fly to the fish. Because the weight is in the line, the rod has to move the line in a loop that unrolls toward the target, rather than flinging a lure.

The five essentials of fly casting

Most certified instructors teach some version of five essentials: remove slack, match the pause to the length of line, match the casting arc to the length of line, apply power smoothly, and move the rod tip in a straight line.

1. Remove slack before you cast. The rod can't move the line until the line is tight. Start every cast with the rod tip low and the line straight.
2. Pause for the line to straighten. Wait for the line to unroll behind you before you start forward. A longer line needs a longer pause. Too short a pause cracks the line like a whip and can snap off the fly.
3. Widen the arc as the line gets longer. A short line needs a short stroke. A long line needs a longer stroke and a wider arc to bend the rod the right amount.
4. Apply power smoothly. Accelerate steadily and finish with a crisp stop. A sudden burst of power in the middle of the stroke is the usual cause of tailing loops and wind knots.
5. Keep the rod tip on a straight path. When the tip travels in a straight line, the loop is tight. When it travels in a dome, the loop opens and loses energy. When it dips, the line can tangle with itself.

Common casting mistakes beginners make

The most common mistakes are breaking the wrist, rushing the back cast, using too much power and trying to cast too much line too soon.

• Breaking the wrist. The rod tip drops too far behind you and the line hits the ground. Keep the wrist firm and stop the rod just past vertical.
• Rushing the back cast. Starting forward before the line straightens causes a whip crack and lost flies.
• Too much power. Forcing the cast makes a wide or tailing loop. Smooth beats strong.
• Too much line too soon. Add line only once your loops are tight at short distances.
• Never watching the back cast. While you learn, turn your head and watch the line unroll behind you. It tells you when to start forward.

Can you practice fly casting at home?

Yes. A lawn and a rod with a piece of bright yarn tied on in place of a fly is all you need. Set a few targets at 20 to 40 feet and practice short, accurate casts before adding distance. Indoors, a short practice rod lets you work on the stroke and the stop.

Students often tell me that learning how to practice correctly was the most valuable part of their first lesson. When you know what a good cast feels like, you can tell on your own whether you're doing it right.