Lotta talk about bridges on plates various. Correct me if I'm wrong (and I absolutely acknowledge that I may be), but unless at SFO you are specifically told to fly the Quiet Bridge, (Night) or the Tip Toe, there's no actual legal procedural requirement to adhere to any height. Clearly the three times table approach is what one should then do and I've only been "Cleared for the Visual" from a position approximating a decent descent profile but I really think the guys with Micrometers, Slide Rules and Whizzwheels are acting on a false assumption. I Viz approached to 28L a week after Asiana and the ATIS just said Expect Viz Appr RWY 28L/R, none of the CVAs mentioned, although I have on occasion seen/heard it. Thoughts?