A subscriber network system is provided with is capable of reducing the response time and reducing the device cost. The systems and apparatuses are configured to flow air at a rate that meets andor exceeds the FAA minimum requirement of 0. The transducer power circuit having a portion physically exposed and electrically conductive to provide contact points. In another form of the invention the panels are comprised of interconnected strata including a sacrificial layer which faces the sun and protects the cover from ultraviolet light degradation; a foam layer that floats the cover; and a geotextile fabric layer.