FFI casting definitions · a card
Under-Running Loop
A Loop whose Fly Leg unrolls below its Rod Leg.
A Loop whose Fly Leg unrolls below its Rod Leg.
Related terms in Fly Leg Shapes: Straight Fly Leg, Convex Fly Leg, Concave Fly Leg, Trailing Loop, Tailing Loop, In-Plane Loop
From the FFI Fly Casting Definitions (2025 Edition), reproduced with attribution to Fly Fishers International.