Cast Net Fishing

Cast Net Fishing: Techniques for Throwing and Retrieval

Sometimes what is elegantly uncomplicated conceptually is remarkably difficult to use in practice. For no gear is this more true than for the cast net, which looks effortless when done well but befuddles beginners.

A cast net is a circular web with a heavily weighted lead line along its perimeter that is thrown toward and over fish from the shore, dock, or boat. When it is retrieved, the pull of the line gathers the weights into the center of the net, trapping the catch.

The technique is straightforward enough, but it’s the toss that confounds, a good throw demands two hands, a mouth, and a bit of a dance step.

To throw it, the net should be gathered in both your hands, with part of the lead line held in your mouth. The idea is to sweep your hands in a half-circle motion, as if following through on a baseball bat or golf swing while you step forward.

Thrown correctly, the net should open in a graceful swirl to a full circle; a kidney shape is the hallmark of bad form. And if you forget to part your jaws when the lead line flies, you will be forcefully reminded.

For those looking for an easier way, a commercially made launcher is now available that looks like an upside-down Frisbee with a handle that is said to be almost foolproof.

Most cast netting in U.S. waters today is for small-scale bait fish purposes, but the technique is used in some artisanal commercial fisheries for food fish, such as in the Gulf of Mexico for spadefish.

There, fishermen idle close to oil rigs to spot hovering spadefish schools, and then try to throw twenty-four-foot saucers over them. When successful, they retrieve thirty-to forty-pound catches, with a few landing as much as seventy to one hundred pounds.

Worldwide, there are some interesting variations of cast netting. In the Philippines, fishermen leave baited lines in relatively deep water with floats at the surface, not to hook pomfrets, but simply to attract them.

They then throw deep-bodied cast nests right over the floats to encircle the assembled fish. But before gathering the net, they retrieve the float and line through a special hole engineered at the peak of the net.

A more primitive cast net – one with no central line attached – is used in Asia in the shallows. The fisherman casts the net, which pins the fish in place until he empties it. Another Asian technique is to cast the net over rocky ledges in rivers.

The fishermen then spook the fish from their lairs with bamboo poles, and they become entrapped along the rim of the cast net.

Nigerian fishermen of the Lagos Lagoon practice group cast netting. Eight to fifteen canoes, each manned by at least two men, form a circle. The fishermen cast the net simultaneously, either clockwise or counterclockwise.

Sometimes two lines of fishermen face each other and hurl their nets into the intervening area, starting from one end and continuing to the other. In keeping with the cooperative nature of these operations, catches are shared equally among the fishermen.

Matching Cast Net Size to Your Target Species

For targeting bait fish, shrimp, or small mullet, match your cast net diameter to the species’ typical school size and swimming depth. Smaller 4-6 foot nets work well for bay minnows and shrimp in tight flats, while larger 10-14 foot nets are better for faster-moving mullet or small pompano. Mesh size matters too: 1/4 inch for shrimp, 3/8 to 1/2 inch for mullet, and 3/4 inch or larger for spadefish bait balls. Always consider the weight—heavier lead lines help the net sink faster when targeting deep, aggressive bait schools. Planning for retrieval is part of the size decision; larger nets can be heavier and harder to haul, so ensure your crew or setup can handle the load.

Different Net Types and When to Use Them

Cast nets come in braided, knotted, and leaded options, each suited to specific scenarios. Braided nets stay compact and are less likely to tangle, making them ideal for quick tosses from a skiff. Knotted nets offer more memory, which helps maintain a consistent spread, perfect for shore anglers targeting tight bait schools. Leaded nets deliver faster sink rates and are best when working deeper or choppy water. Some nets come with float lines for surface-targeted bait while others incorporate stiffer lead lines for quick closure. Choose a net whose deployment and retrieval match your typical fishing environment to avoid wasted casts and maximize bait harvest.

Choosing the Right Net for Conditions and Crew

Wind direction, wave height, and crew size all influence net selection. In windy conditions, a lighter, smaller net with a compact throw radius keeps you from overextending, while smoother, calm water allows you to deploy larger nets to capture wider bait schools. Crew size matters: a single angler might favor a manageable 6-8 foot net, whereas a two-person team can handle a bulky 14-foot model and benefit from faster retrieval. Consider water clarity too—clear water lets you see bait blobs better and adjust your cast more accurately, while murkier environments demand a net with heavier lead to ensure quick sink. Preparing appropriate lines and a retrieval plan will keep everyone working smoothly.

Step-by-Step Casting Tutorial for Consistent Circles

Start by holding the net’s horn in your dominant hand and pooling the apron in the other. Swing the net out in a smooth arc, keeping your arm extended and rotating your torso to build momentum. Release the net at shoulder height while flicking the wrist outward so it unfurls into a full circle. Keep your eyes on the target zone—tracking the bait helps you time release when the circle can land ahead of the school. As soon as the net hits the water, drop to your knees or squat to stop forward momentum, and immediately begin retrieval by pulling the drawstring with steady, even force. Consistent circles come from repetition; practice keeping the throw level and breathing rhythmically to maintain timing.

Optimizing Location Selection for Bait and Spadefish

Baitfish like shrimp and small mullet gather near grass beds, docks, and tidal inlets where currents concentrate plankton. Spadefish follow these bait concentrations and feed around wrecks, jetties, and oyster bars. Scout for rip lines, floating debris, or bird activity, as these are natural indicators of bait schools. Early morning and dusk offer calm winds and lower boat traffic, making it easier to spot schools and throw precise casts. Use a polarized lens to cut glare and read the water, and avoid scaring bait with loud approaches. By placing your cast net in areas where bait and spadefish overlap—such as current breaks near structure—you can land both naturally.

Maintenance Tips to Keep Your Net in Shape

After each outing, rinse your net in fresh water to remove salt and organic debris that accelerate rot. Hang it loosely in the shade to air dry and avoid direct sunlight, which weakens the fibers. Inspect the lead line for cracked or missing weights; replace or crimp leads using pliers if needed. Check for holes or fraying in the mesh and mend small tears with a net needle before they grow. Store the net in a breathable bag rather than a sealed container to prevent mildew. Periodically wax the hand line and swivels to keep them from seizing up, and rotate the net so it doesn’t stay piled in one spot—these simple routines extend the life of your net and keep it ready for the next bait run.