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How to catch fish without using a rod
Get some fishing line, tie a hook (and sinker, if needed) on it.
Bait the hook.
Stand near the edge of the water, or on a dock or boat, and let the line dangle into the water.
Tug on the line to set the hook when you get a bite, then pull the fish in. Cut the top off a 2-liter soft drink bottle, or other bottle with a funnel shaped top.