CI written exam practice questions · a card
How does the path of the rod tip relate to the size of the loop?
In a conventional overhead cast, tip-path curvature sets loop width — near-straight is narrow, convex opens it — but the fly leg also depends on aligning that path with the incoming line.
In a conventional overhead cast, loop width follows the curvature of the rod tip path: a near-straight path gives a narrow loop, a convex path opens it. Fly-leg shape is a separate question. A straight tip path in the wrong direction relative to the incoming line can still produce an unwanted fly-leg shape, so judge both the width and the leg.
To keep the tip path straight, the size of the casting arc must vary with how much the rod bends. Bend little and the arc is narrow; bend a lot and the arc is wide. The tip path is the result you steer, and the arc is the control you adjust.
Read the fly leg, adjust the arc
- Straight fly leg. The arc matched the rod bend and the path lined up with the incoming line. Keep it.
- Fly leg curving upward. The arc is wider than the bend needs — narrow the arc, or bend the rod more to match it. Then check the path’s alignment with the incoming line, not just its curvature.
- Fly leg curving downward. The arc is narrower than the bend needs — widen the arc. If the leg dips and crosses the rod leg, that is the tailing loop.
You do not have to judge arc width in degrees mid-cast. Watch the loop and the fly leg, then change the arc and check the aim until the leg comes back straight.
Source
From the CI Study Guide (2025) (PDF), the first and second Gammel Essentials; terms from the FFI Fly Casting Definitions.