Aso Known as Throw nets.
How to cast a cast net
Which when cast or thrown by hand in such a manner that it spreads out on the water and sinks.
Fish are caught as the net is hauled back in.
Cast nets are particularly effective for catching bait Fish
This simple device has been in use in various modifications for thousands of years and is the best way to catch fish that are particularly resistant to baited hooks
The net is a circular net made up of a number of panels with weights evenly distributed around the edge of the net.
Attached to the net is a land-line, the end of which is held in the hand as the net is thrown.
When the net is full and it is pulled back in the net closes around the fish and is retrieved by pulling on the land-line bringing the fish up into the boat or into a bucket.
The Japanese style features a bottom pocket and is usually more favoured for commercial use but is suitable for recreational use also.
MPI Rules for Cast Nets in NZ - 2017
For species, you would expect to catch with a cast net such as garfish/piper, herring/yellow-eyed mullet, and pilchard the minimum mesh size is 25mm.
Under the set net rules, only one set net is allowed on a vessel unless the second net is less than 10 metres long and has a mesh size of 50mm or less.
A cast net falls under this definition in this circumstance.
Catching bait fish is essential to catching many types of sought-after game fish in both salt and fresh water.
Catching bait fish that predator fish are feeding on will greatly increase the chances of a productive day of fishing.
Having the correct cast net for the type of bait being targeted is very important. I have thrown many cast nets over giant schools of bait and caught zero fish.
In general, you want the largest diameter net you can throw with heavy round sinkers between 1-1.5 pounds per radius foot.
The mesh netting should be small enough to catch the targeted bait but large enough to sink quickly. This is most important when catching fish that are in deep clear water. Most nets work in shallow water because there is little time for the bait to escape.
Learning to throw a net is the first step.
There are dozens of great techniques depending on the size of the net.
Practising in grass or in water where the area can be disturbed is a great idea.
You don’t want to be next to a school of bait you need to catch and be wondering if the net is going to open.
It is best to start out throwing a 5-foot radius net for kids and a 6-foot radius net for adults.
If you try for an hour or more without any luck try a different technique.