They do work, especially on boats under 25ft, smaller boats like yours will see a noticable gain in trim control, as well as the ability to get on plane with less power and stay on plane with less power. Some guys say they see better fuel economy, that can occur as well, but your significant gain will be with the trim control and ability to hold plane at low speeds. My buddy runs them on his 29 welcraft with twins, does not give him trim adjustment much due to the boats weight, but still gets him on plane easier so even on bigger rigs they do work to some extent.
