The present invention provides methods of improving the incorporation of an implantable device into a bone of a host in need thereof. An injection-molded, closed end preform is provided having a neck finish with an internal andor external peripheral drive surface. The first notch-antenna radiator and the second notch-antenna radiator are formed integrally with one another. In a third embodiment, a plurality of valving units is provided for beach retention of sand through efficient separation of sand from incoming waves. Light from the LEDs is directed inwardly into the interior region and then outwardly from the interior region.