Abstract: A mounting assembly for securely mounting a dash instrument within a corresponding aperture of a dashboard. The mounting assembly comprises one or more mounting brackets mounted to the instrument and positioned against the rear side of the instrument panel to securely mount the instrument to withstand forces typically experienced by fast moving vehicles such as boats. The mounting brackets each comprise a slot defined therein which divides the bracket into two regions, a first of which provides a tapered portion. A connector extends through the slot and into a corresponding aperture of the instrument so as to contact only one side of the slot of the mounting bracket.

Abstract: A removable form is positioned within a boat hull and may be removed to optionally install a sonar transducer and a method of optionally positioning a sonar transducer within a boat hull after the hull is fabricated. The removable form is defined by a distal end and an opposing proximal end. The proximal end includes a retaining flange extending beyond a nominal thickness of a portion of the hull for anchoring the removable form within the boat hull. The distal end is substantially flush with the outer surface of the hull. The removable form is temporarily adhered to a boat mold and the hull is formed therearound. When the hull is hardened, it is removed from the mold with the removable form secured therein. The hull is operative in this condition, or the removable form may be removed and a sonar transducer may be positioned in its place.