The hand caster is easy to use and takes up little space. Go for it. With this simple gear I have caught trout, salmon, perch, catfish, piranha, carp etc. Angling Since the time of Isaak Walton, angling for trout has resulted in a voluminous literature written mainly by fly-fishermen. Their methods developed on the slow flowing chalk streams of England where the wily brown trout have an appetite for insects.
Fishing is passive or on the drift.
Such a model has limited application worldwide because the expanded system is more complex viz. Trout happily eat insects, but also minnows, worms, snails, shrimp, crabs etc. The culinary best trout are orange-fleshed ones that feed on crustacea. Lure fishing is used to do this. This is an aggressive form of fishing whereby you may interfere with the territorial instincts of a fish and provoke it to strike.