CLOSE PROX GA-SMA MIL-FGTS ON TRAINING FLT.

Narrative

I WAS FLYING FROM HALF MOON BAY ARPT ON A SIGHTSEEING/PLEASURE FLT XING OVER THE GOLDEN GATE BRIDGE I WAS IN MID CHANNEL OF SAUSALITO BAY WHEN 2 FGT ACFT CAME FROM BEHIND AND LOW IN A CIRCLING MANEUVER; PAST IN FRONT AND SLIGHTLY BELOW HORIZON OF MY ACFT. THE FGTS WERE PRACTICING FOR AIR SHOWS ON WEEKENDS. NO NOTAMS WERE ISSUED FOR THIS PRACTICE AREA. THE FGTS WERE ONLY 2-300 FT ABOVE TERRAIN 500 FT ABOVE WATER. I WAS NOT EXPECTING THIS TYPE OF MANEUVERING OVER RESIDENTIAL AREAS AT HIGH SPDS. I DOUBT THEY EVEN SAW ME. THE FLOOR OF THE TCA WAS 3000 TO 4500 FT IN LOCATION I WAS FLYING. THE FGTS WERE PRACTICING OVER FISHERMAN'S WHARF (SITE OF UPCOMING AIR SHOW). I WAS 10-15 MI AWAY FROM THAT AREA. THE 2 SOLO PERFORMERS WERE THE ONES I WAS INVOLVED WITH. AT POINT OF INTERCEPTION WITH MY ACFT THE FGTS SOLO'S WERE BELOW THE FLOOR OF TCA EVEN BELOW THE CTLED AIRSPACE FLOOR OF 700 FT IN THAT AREA. I CONTACTED THE FSS AND NO NOTAMS WERE ISSUED FOR THE AREA. THIS SHOULD BE WELL ADVERTISED IN THE AVIATION COMMUNITY AND NOTAMED.