The invention provides an apparatus that attaches to a hull of a boat to disrupt water flow around the hull such that a wake created behind the boat is larger, differently positioned, and/or differently shaped. The apparatus includes a base and a blade. The blade is equipped with a mount structure that attaches the base to the blade. The blade can be reversibly mountable to the base such that either face of the blade faces a desired direction. The apparatus provides tool-free adjustment between a first configuration in which the base is mounted to the blade and a second configuration in which the base and the blade are separated. In some embodiments, the apparatus is removably attached to the hull by one or more suction cups. Additionally, the apparatus can be inflatable. The invention further provides a deployable lanyard assembly and a splash deflector for use with the apparatus.