This short video shows a guy using the Yo-Yo Fishing Reel which is a static fish trapping device that I assume is illegal in many areas. In an emergency running a trap line with these is more efficient than simply picking up rod and reel, and they require less work than casting a net.

I have a dozen myself and they’re available on Amazon. But like anything else don’t be overconfident in the equipment. As a kid I fished a lot and catching enough fish to feed a family is impossible for most people – after a disaster or in an emergency it is best used to supplement other food sources.

Anyway this is a nice intro to how the reels work, despite the iffy sound quality.