The EBGames listing for Hooked says that it includes a "free controller," but we have two problems with that claim. First, the package costs $60. We doubt some fishing game would cost $60 without being bundled with accessories, meaning it's not really a free controller. Second, a Wiimote fishing controller costume is not a controller.
So the Dreamcast fishing controller can emulate the Wiimote, but the Wiimote needs a shell to approximate the Dreamcast fishing controller.