Dogfish? You actually want to catch them? Darn man good for it, clean them out. Anything with a piece of Herring on it should work. But be careful after you catch one. I think the rules state that you can't mutilate them and then throw them back like the before. Salmon leaders work great but cost $. But then you might catch a Salmon before the Dogfish get your Herring.
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God grant me the serenity to accept the size of fish I catch, the courage not to lie about it, and the wisdom to know that no one would believe me anyways.