A boat canopy mounting system having a front mounting assembly and a rear mounting assembly. The system and method determines counts of events detected coincidently by a guard detector subsystem and a sample detector subsystem in one or more energy regions as well as counts of events that are detected by the sample detector subsystem and not coincidently detected by the guard detector subsystem for the respective energy regions. The tabs have compound radial and circumferential aft inclination inside the outlet for generating streamwise vortices for attenuating exhaust noise while reducing performance loss. In one embodiment, communication device includes a receiver section for receiving an acknowledgment or a non-acknowledgment signal in response to information transmitted by the transmitter section of the communication device. In one embodiment, the present invention includes a flange, notches, indentations or other formations which assist in the insertion and removal of the present invention in the cookware.