I used one net per action queue, i have 7 actions, thus 7 nets. i did this until 50 fishing skill and stored all the small fish for later.
after 50, a rod. now, we have many options here, different reels, different floats, baits, etc.
pick a target, say, a catfish. (we're going to use the fish table here: https://www.wurmpedia.com/index.php/Fish) they love fishbait, made by filleting fish. you can use a lightrod (S,LR,MR,DWR) medium, or deep water.
you can use metal (best at sea/deep water) or bone hooks and the twig is the best, well, not the best but the best at any depth and any time of the day so it beats all the other ones if you plan on a long/prolonged fishing session.
or herrings like you said, they love the "grubs" and you can use (LR,MR) light rod or medium rod.
the key is to know what they love and what setup works the best, otherwise you're going to have a hard time