Anglers fishing for walleye commonly use leeches as bait. Leeches are very active on the hook, which draws the attention of fish. The small invertebrates can ball up if you hook them incorrectly, which prevents them from making the wriggling motions that draw the fish. Proper secured leeches are hooked through the correct end. Double-hooking the leech prevents it from wriggling off the hook.
Hold the leech by its tail end. On most leech species, this is the end with the larger sucker. Hold the hook in your other hand.
Force the hook through the sucker on the leech's tail. Hold the leech still and rotate the hook so the point comes back toward the leech. Hooking the tail will cause the leech to swim forward, away from the hook, which keeps it from balling.
Force the hook through the leech's midsection after hooking the sucker. This double-hooking keeps the leech on the hook longer.
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