Followed this thread for a bit and weighed my 1987 22' Nova Star yesterday. Fiberglass shell, aluminum framed, no roof AC or generator. Gas just under half a tank and about 1/4 tank in the grey water.
Came in at 4,400lbs. Sold my Dolphin and re-loaded all the 'stuff' into the Nova Star yesterday, so I'll be curious to see how much it weighs loaded now.