Enterprise Tackle Imitation Dog Biscuit. Buoyant imitation dog biscuit that is soft enough so it can be used directly on a hook or a hair rig. Enterprise Imitation Dog Biscuits have been developed to overcome some of the problems associated with other similar products currently available. The inclusion of a counterweight into one side, ensures that the hook always remains on top, out of view of any wary fish. It also ensures that the imitation biscuit sits low in the water, just like a real biscuit that has become waterlogged.