Squid jigs can be of different sizes and shapes but in my opinion the best one is this in the picture, shrimp like and pinkish. There are others similar in different colors, others made of just a long pin where you can put a dead fish, others with incorporated light, fixed or flashing, others are simple plastic tubelike, but the thing they all have in common is the crown of unbarbed hooks at the bottom. This are very sharp and will hook the squid when it grabs the bait.

From the boat - This is the most common way to fish for squid. Have a meter of leader of small fishing line with a swivel and clip it to the fishing rod line without sinker, it has one already. Throw the line and let the jig sink, then retrieve it with short light strokes alternated to longer ones. I like to shake the rod to transmit a kind of tremor to the jig to simulate a struggling fish. When you feel a touch or pull retrieve the jig making sure not to give any slack as the hooks have no barbs and any slack will be enough for the squid to get free. As soon as you get the squid out of the water the better as she will have no more propulsion and will hang motionless. Land the animal in a bucket but be sure you have water in it as it will squeeze black ink as soon as it touch anything. If you have no water in the bucket, you will have a messy boat for a while as the black ink is very tough to remove.

From shore - Same as from the boat, but as the bottom is ascending towards the shore, the jig can easily get hooked on the bottom during retrieve. Keep the jig way up from the bottom.

Snorkelling - This is the funniest and easiest way to get squids as you will first locate the school and so you know that they are really there. You need a floating square of material where to coil the line (you need just 4 or 5 meters of line). Keep in mind the place where you spotted them because during the fishing you will probably get away from the place but when you will lose the sight of the school you can get back to the start and find them again (probably but not 100% of the times). Well, when you spot the school, don't get closer until your jig is hanging under you. Then start to jig a meter or so above the bottom and get closer...it is a real show you are going to watch... Often the first to get closer are smaller ones that will shoot to the jig, throw a tentacle to feel the bait and be a little shy, but the bigger ones are the ones that probably will get the bait...they'll came from the outside and shoot to the jig, grab it and try to pull it away. It is now that you have to give a pull and start retrieving without giving any slack. When you have them close enough get the out of the water and they will hang motionless. They will squirt ink just after they get hooked till they are out of the water so the visibility will be bad, but don't worry, it will came back pretty fast. When it is out of the water you can put them in a net or pull the head to kill them. I use to squeeze the head to get the beak off and kill them, and put the in my pocket. As they are pretty intelligent, you will not get them all, I normally get a few, my maximum in one session was six of them but I never found really big schools, just a dozen or so. When you put the cought one safe in the net, then look around for the others that can be still around or got back where you spot them first. When they will get very shy and just hoover around the jig without touching, it is probably the end of your session as they are too suspicious and it is better to stop and try a few hours later.