In these shallow waters....even the least bit of confusion can find you waiting on a raising tide or tow boat....while the Mozzies and Green Flies eat you for their Lunch.
Add in the ever changing channels due to the sand drifting about with tide, wind, storm, and natural erosion....moored marks drifting or disappearing....and shoals creeping past pole marks overnight....and keeping the Pilot Notes current becomes a bit of a challenge.
The USCG recently elected to REMOVE the marks in an area known locally as the Drain because the channel did not carry six feet over its length....which just added to the fun and games.
Fortunately Tide Fall is slightly less than three feet in normal times so it is not like the UK where there is such a huge variance between Tides.
Fishing Rules are even more fun yet....what with State, Federal, and International Rules, Regulations, Laws, and Procedures.