What a bait casting net does and why you'd use one
A bait casting net — also called a throw net or cast net — is a circular net weighted around the edges that you throw by hand to trap baitfish in shallow water. You pull a rope attached to the net's center, which closes the weighted perimeter like a drawstring bag, trapping whatever swam into it. The net sinks fast, so it works best in water from ankle-deep to about eight feet, and it's most effective when you can see the baitfish or know they're schooling in a particular spot.
Bait netters use them to catch live mullet, herring, shiners, and other forage fish to use as live bait for larger gamefish. Unlike a seine net (which requires two people and a long pull) or a dip net (which is small and slow), a cast net lets one person work alone and cover more water quickly. The trade-off is that it takes practice to throw accurately and time the closing so the net sinks before the fish scatter.
You'll find cast nets most useful in coastal shallows, tidal creeks, and the flats near river mouths where baitfish school. They're legal in most states but regulated differently — some require a license, some restrict where you can use them, and a few ban them entirely. Check your state's regulations before you buy one.
Key Takeaways
- Cast nets work best in water shallow enough to see the bottom or know baitfish are present, typically ankle-deep to eight feet.
- You throw the net by hand, and it sinks fast — success depends on timing the throw so the net closes before fish escape.
- Regulations vary by state: some require a fishing license, some restrict use to certain waters or seasons, and some ban them outright.
- Mesh size matters — smaller mesh (1/4 inch) catches tiny shiners and anchovies, larger mesh (3/8 to 1/2 inch) works for mullet and herring.
- A 4-foot to 6-foot net is easiest to learn with; larger nets (8 feet or more) catch more but are harder to throw and retrieve.
Choosing the right net size and mesh
Cast nets come in diameters from 3 feet to 12 feet, and the size you choose depends on your strength, the water you fish, and what baitfish you're after. A 4-foot or 5-foot net is the best starting point — it's light enough to throw repeatedly without tiring, sinks quickly, and catches enough bait for a day of fishing. A 6-foot net gives you more coverage and holds more fish but weighs more and requires better technique to throw cleanly. Anything larger than 7 feet is for experienced netters or commercial operations.
The mesh size — measured in inches — determines what you can catch. A 1/4-inch mesh traps tiny shiners, anchovies, and silversides but clogs easily with debris and is slow to retrieve. A 3/8-inch mesh is a middle ground, catching small to medium baitfish and clearing faster. A 1/2-inch mesh or larger lets small fish escape but works well for mullet, herring, and mackerel. Match the mesh to the baitfish you're targeting: if you're after live shiners for bass, go smaller; if you want mullet for tarpon or pike, go larger.
Weight matters too. A heavier net sinks faster but is harder to throw. Most nets weigh between 2 and 5 pounds; a 3-pound net is a good compromise for learning. The weights are usually lead sinkers sewn into the perimeter, and they're what pulls the net down and closes it around the fish.
How to throw and close a cast net
The throw itself has three parts: grip, coil, and release. Hold the net by the rope attached to the center of the net — this rope is called the hand line — and wrap the excess rope around your wrist or hold it in your teeth so you don't lose it when you throw. Coil the net's edge in your other hand in loose loops, not tight knots. Step into shallow water where you can see baitfish or where they're known to school, and face the direction you want to throw.
Swing the coiled net in an arc and release it so it opens into a flat circle as it flies. The timing is everything: you want the net to land flat on the water and sink before the fish react. As soon as the net hits, pull the hand line hard and fast — this closes the weighted perimeter and traps the fish inside. If you pull too slowly, fish escape; if you pull too fast, the net tangles. Most netters practice this motion hundreds of times before it feels natural.
Once the net is closed, gather the edge and pull it toward you, hand over hand, keeping the rope tight so nothing escapes. The fish will be bunched in the center. Reach in and grab them, or if the net is deep, pull it into a bucket or cooler. Shake the net gently to dislodge debris and weeds, then coil it again for the next throw.
Where to cast and what conditions work best
Baitfish school in predictable places: along the edges of flats where deeper water meets shallow, near dock pilings and mangrove roots, in tidal creeks during slack water, and in the wash of river mouths. Early morning and late afternoon are usually best because baitfish are more active and visible. Overcast days work better than bright sun because the fish are less spooky and easier to see.
Water clarity matters. You need to see the baitfish or at least see the bottom to know where they're likely to be. Murky water makes it hard to time your throw, and you'll waste energy casting blind. If you can't see, ask local anglers or bait shops where baitfish are schooling — they often know specific spots that hold fish even in poor visibility.
Tide and current affect where baitfish congregate. During a strong outgoing tide, they often stack up in deeper holes or behind structure. During slack water, they spread out and are harder to find. Learn the tidal patterns of your local water and fish the slack periods when baitfish are most active and catchable.
State regulations and licensing
Cast net rules vary widely. Some states require a fishing license to use a cast net, even if you're only catching bait. Others allow cast nets only in certain counties or water types — for example, legal in coastal waters but banned in freshwater lakes. A few states, including some in the upper Midwest, ban cast nets entirely. A handful of states require a separate cast net permit on top of a fishing license.
The best way to know your state's rules is to check the official fishing regulations guide published by your state's fish and wildlife agency. Search "[your state] cast net regulations" or call the agency directly. If you're fishing out of state, do this before you go — a citation for an illegal net can be expensive and will ruin a trip.
Some states also restrict the mesh size you can use or the species you can target with a cast net. Mullet, for example, is protected in some areas. Read the fine print, not just the headline, because the details matter.
Common mistakes and how to avoid them
The most common mistake is throwing too hard or too fast. A cast net doesn't need to go far — 15 to 20 feet is plenty. A gentle, controlled throw that opens the net flat is far more effective than a wild heave that tangles the net mid-air. Practice on land first, throwing into an open area where you can see the net's shape as it flies.
Another mistake is pulling the hand line too slowly. The moment the net lands, pull hard and fast. A half-second delay gives the fish time to bolt. Beginners often hesitate, worried they'll tear the net, but a quick pull is what closes it before the baitfish escape.
Throwing in the wrong place is also common. If you cast where there are no baitfish, you'll catch nothing but frustration. Watch the water for ripples, flashes, or birds diving — these are signs baitfish are feeding. If you don't see activity, move to a different spot rather than casting repeatedly in dead water.
Caring for your net and keeping it ready
After each use, rinse the net in fresh water to remove salt, sand, and debris. Hang it to dry completely before storing — a wet net left in a bag will rot or mildew. Check the hand line for fraying and the weights for corrosion. If a weight is loose, sew it back on or replace it; a missing weight throws off the net's balance and makes it sink unevenly.
Store the net in a cool, dry place, coiled loosely so the mesh doesn't crease or knot. Some netters hang their nets on a frame or peg board. Avoid storing it in direct sunlight for long periods, as UV light weakens the nylon. A well-maintained net will last many seasons; a neglected one will rot or tangle beyond repair in a year or two.
If the mesh tears, you can patch it with netting repair tape or by hand-sewing a patch over the hole. Small tears are easy to fix; large ones may not be worth repairing. If the hand line frays, wrap it with electrical tape or replace it with new rope of the same diameter.
Frequently Asked Questions
Do I need a fishing license to use a cast net?
It depends on your state. Some states require a license for any fishing activity, including catching bait with a cast net. Others don't require a license for bait netting. Check your state's fishing regulations guide or call the fish and wildlife agency to be sure before you cast.
What's the difference between a cast net and a seine net?
A cast net is thrown by one person and sinks quickly to trap fish in a small area. A seine net is a long net pulled by two people along the bottom, covering a larger area. Cast nets are faster and work alone; seines catch more baitfish but require a partner and more space.
How deep can you use a cast net?
Cast nets work best in water from ankle-deep to about eight feet. Beyond eight feet, the net sinks too slowly and the fish have time to escape. In very shallow water (ankle-deep), the net can hit bottom and tangle, so aim for water at least knee-deep when possible.
Can you use a cast net in saltwater and freshwater?
Yes, cast nets work in both. However, some states ban them in freshwater or restrict their use to certain waters. Always check local regulations before using a cast net in any new water, whether salt or fresh.
How long does it take to learn to throw a cast net?
Most people can make a decent throw after 20 to 30 practice throws. Catching fish consistently takes longer — usually a few outings on the water where you can see baitfish and adjust your timing. Don't expect to be expert on your first day, but a basic throw is learnable in an afternoon.