I'm talking about the part labeled "Launch Area." There is nothing like this in any of the areas you mentioned. This launch is unique and threatened, by us. If riders spread out along launches on the SW coast, issues would ease.
In every case you mentioned, you can get away from the narrow launch area and ride as far out and laterally as you want. If people spread out there can be fewer problems. People don't seem to want to do that, although the smart ones usually try .
If more people used the Flats, issues in heavily populated Miami-Dade would ease. That is assuming we didn't annoy the rangers, fingers crossed on that. Go north of West Palm Beach, crowding thins out along with frequent access issues. People pay for dive charters without a second thought, because its worth it. Same thing applies to sea taxi and kiting the flats.