I would recommend the cast net before any other way of catching. I love my net, and I catch all kind of things I never seem to catch any other way. I catch lots of bream, a lot of minnows, and I've caught white bass, largemouth bass, channel catfish, turtles and carp. I usually throw the net out over boat landings, where the won't be any rock, limbs, or telephone poles (lol). You can catch fish for a surprisingly long time before they vacate the premises, if the water isn't really clear. I used to use a rod and reel to catch all my aquarium inhabitants, but I've tried to add smaller guys lately, and most of the time what I catch on rod and reel is a little bigger than what I am looking for. I catch lots of little guys with my cast net. I've tried minnow traps, but all I seem to catch are crayfish and these long eel looking salamander things with little tiny feet.
For those out there who do use a throw net, have you noticed any difference in the survival of fish caught with a nylon net versus a monofilament net?