Those mega yachts were always seen in the Balboa Yacht Club anchorage. Over the years I got to where I recognized a few of them from seeing them repeatedly. I remember one with a radar dome and stainless steel plating behind the anchor “hawse pipes” (that may not be the right word, I was Army) that ran right down to below the water line. Very distinctive.
Did you ever get out to Taboga Island? I went out there frequently for the beach and snorkeling. A couple of times I stayed the night at the small Army barracks that was at the end of the island. That was a cool set up, at night they would string up a bed sheet between two poles they had on the front lawn then set up a movie projector and watch movies......People would walk out from the village and we would all sit on the front grass and watch.