At sunrise over Lake Conroe, beams of morning light scatter sparkling reflections off the water's placid surface. In the distance, a slight whine, audible only to the gulls and morning sunbathers, signals the end of a sleepy night and the beginning of an exciting day of water sports. The sound belongs to a Yamaha Waverunner VX110 Deluxe, just one of Fun Rentals' fleet of wave-taming watercraft. In addition to the zippy waverunners, their sturdy pontoons form a leisurely flotilla, welcoming guests in search of a calm trip along the lake's azure waves or a place to peaceful place to practice making aircraft carrier noises with their mouths. From the headquarters along one of the lake's private beaches, staffers also entices shore-bound guests with space for picnics and sunbathing.