An automatic locking landing net yoke includes a channeled ramp feature such that, when the handle is drawn through the yoke and the yoke slides over a spring button, the ramp forces or cams the button downwardly and into the handle. The signal connector is detachably plugged to a socket of the portable communication apparatus. The sensed touchdown is communicated to a transmitter and subsequently to a remotely positioned receiver to provide a desired bio-feedback of the sensed touchdown. The set of significant-coefficient-group flags is encoded in the bitstream. Because the detergent is essentially entirely bound to the solid substrate, there is little or no difficulty in ensuring that the end product is detergent-free. This coating can be used to provide a thermally protected article having a metal substrate and optionally a bond coated layer adjacent to and overlaying the metal substrate.