As the distance increases, the haul commonly gets longer: a longer carry needs more line speed, and hauling is where a good part of it comes from. At distance, hauling is permitted and encouraged because it adds quite a bit of line speed when done properly, and it can also reduce the work done by the rod hand, narrow the casting arc and shorten stroke length compared with an unhauled cast of the same distance.

Two different things are easy to mix up here:

• What the definition says. A double haul is a pull of line through the guides on consecutive casting strokes, with the line hand returning towards the rod hand during the pause. It does not define the forward and back hauls as equal.
• What the exam asks. Haul length, timing and force must suit the length of line carried and stay consistent between the forward and back cast — so at distance, keep the two hauls matched and avoid a short forward haul.

Then grow the haul with the carry: introduce it as the line gets longer — the double-haul task is cast at 50 ft, which is a sensible point to add it — and let it lengthen as the carry lengthens. Watch your line hand while casting, and video it.

Source

From Task 15 and Task 14 in the CI Study Guide (2025) (PDF); terms from the FFI Fly Casting Definitions (Hauling). See also Task 14, double haul.