Monsters are extremely rare and hard to find. They often change their feeding areas and appear at different times.
Before catching a monster is worth collecting tips from the NPCs and getting unique bait for monsters. Spread bait over as much surface as possible. Thanks to this, you have a better chance to see the tracks left by the monster in the water. Remember, cast the fishing rod on the selected place and wait.
Don’t you have a special bait? Don’t worry, you still have a chance to capture the monster. Drop the float into the water and wait. It is enough to be patient or even extremely patient. That’s all!