UFO Sighting in Dunnellon, Florida on September 4th 2015 – Using new Laser (for astro) Pointed to Low white cloud to test

Just received a new laser pointer for star pointing, I wanted to see how strong it would be so before sun went down all the way I tested laser pointing a a low (white) cloud seconds after pointing at cloud a object slowly moved out of cloud grew lighter (Brighter) in appearance in a pulsing manner, slowly moved in straight line for about 30-45 seconds then faded to same as the sky in background. This is the 4th time I have seen such objects 3 in daylight and on at night all being very low others vanished over tree tops this one faded out seemingly in increments. No storms in or near area. Some Clouds in area, like white cotton.