Spoiler Alert!Catch at least 1 bass, pike and catfish while using the fishing lure in the boat. Then, from the entrance of the fishing hole, walk to the far right, past Hena's hut until you hit a wall, cast your bobber parallel to the wall into the water there and fish like you normally do. If done correctly, your first catch should be the sinking lure! If you don't get it on your first try, try a few more catches and you should get it.
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