I'm trying to understand the process of fishing with a net. Two people with a small boat and a net, fishing in the sea within sight of shore. (My actual interest in this is that I am writing about fictional characters doing it, and I care about getting the details right, but I'm trying to phrase the question so that answers will also be useful to people doing it for real.)
Most of what I can find on personal-scale (as opposed to commercial-scale) fishing – as well as my own extremely limited experience – involves rods. But as I understand it, nets are supposed to be more effective (as measured by quantity of fish you can catch per hour)?
I understand in general terms how it works with a rod; if there are fish nearby, the bait lures them in. But there doesn't seem to be any equivalent of that with a net. Does that mean you have to correctly guess where the fish are? How do you do that? Or how do you adjust if your first guess doesn't turn up anything?
I see YouTube videos on cast-net fishing, but this seems to be only for tiny fish suitable for baiting hooks for use with rods. I'm not seeing any indication that anyone expects to use it for directly catching edible fish. I also see videos on direct net fishing in ponds, but no indication of anyone doing it on a personal scale in the sea. Is there a technical reason for this, or is it just that sport fishing is considered more entertaining with a rod, and commercial fishing at sea nowadays would always involve big trawlers?
Given two people with a small boat and a net, fishing offshore, what kind of net would you want to use, and how would you actually find the fish so you know where to put the net? Or is there a different way of approaching the problem that I am missing?