Mystery craft scares Pacific Beach residents

My room mate and I rode our bicycles down to Crown Point, a bay-side park in Pacific Beach, Ca. There were approx 150 people in the park and perhaps another 150 outside the park or on nearby beaches. It is a popular area. My friend and I observed a metalic object coming straight towards us from accross the bay. It appeared to be about 50 feet across, and it was disc shaped. We assumed from it's relative slow speed, size, and lack of sound, it was probably the Fuji ballon craft, or something like it. There was a very bright light on the bottom of the craft. It was just beginning to get dark in the area and this was the only moving object in the area. It hovered directly overhead, about 50 feet off the ground, and somehow we knew it was not a balloon craft. It was shaped wrong and it was too metallic. There were no jets or propellers. I joking told my room mate, it was probably "swamp gas". He wasn't laughing. We were scared and the hair was sticking up on my neck. I looked around and it seemed like everyone was watching this thing. I saw no portholes, anteneas, or any protrusions at all. As it got darker, the light seemed brighter and stronger. It was like a floodlight, but it did not have a directed "beam" of light. It was just bright.
After hovering 25 minutes or so, it began ascending and moving away from us in an upwards arc. It suddenly rapidly accellerated and was out of sight in seconds. I have seem anything that could accellerate that fast. It was like zero to 1000 MPH in about 2 seconds. It started moving north and curved around to accellerate to the south and almost straight up. The next day, we looked in the paper to see if anyone reported it, but it was not in the paper. In fact nobody wanted to talk about it.
((name and address deleted))  San Marcos, Ca. 92069