I read somewhere the fishermen, boaters, wind surfers all complained about the seaplane and then post 911 fears almost squashed it. Still there though and Moffett field is running some aerial sight seeing tours also.
(As a sideline to this, when Marion Berry held sway there, fishermen also voiced concern due to the takeover of the Bay of non-native species such as trouser trout, suckers and blow fish. Mayor Berry incredibly said he'd look into it! Hopefully leadership has improved since his reign.)