Unfortunately for us, the navigational plan for the biggest sailboats that can pass under the bridge, is for them to use the channel just east of the wall...the bridge is higher by a few feet overhead in that area, allowing their masts to just squeak through without hitting...
If we make a fuss about this sailboat, the backlash could/most likely WOULD, be divers being banned from just east of the wall.
Smarter solution.....none of us should EVER imagine that a dive flag offers any safety to us, from passing boaters....Too many are not looking for the tiny flags, too many don't care, and enforcement is near zero---all there appears to be is REVENUE based ticketing of divers that are caught without a flag, far from other divers with flags.
At the bridge, any boat running through is going to be under motor power, other than kayaks ( they hit us, we may win the collision
...Motors can be heard by "attentive divers"....Any time you are surfacing, you need to consider WHERE you are, and if there are any motor sounds nearby..doppler shifts taking place--meaning figure out if the boat is approaching or leaving....Is it safe to surface? This needs to go through your head.
The most we could "ask nicely for", would be for the big sailboats to see a sign on approaching either side of the bridge, that tells them they should make 4 blasts of their boat horns held up to the hull, to pass the noise into the water...you hear that, you glue to the bottom, and head away from the sailboat crossing area.