Huge craft hovering over a residential area...

I am not exactly sure of the date, but I remember the year and time exactly.  I was sixteen years old and this single event is the reason I am a MUFON supporter and interested in the UFO phenomenon.  I have never seen anything since that one experience.  
I watched a huge craft hover over an area near my home.  I could see it well and it was very slow, fading out of view behind a house.  I cannot emphasize enough how large it was.  It was oval-shaped and had many, many light on it.
The next afernoon at work, I told some people who thought I was crazy, at least until it was reported on our local news that many people saw this craft.  
Years later, in 1998, I was watching a UFO documentary on television and saw a picture of the exact craft I saw.  You don't forget things like that...  
Anyway, the picture was taken in 1988 (same year I saw it) in Florida.  
I would just love to know what it was.  
Thank you...
Witness indicates that the date of the alleged sighting is approximate.  PD