I know what you are thinking, “What about the tides?”. Don’t worry, I’ve thought about that too. While the good folk of Brightlingsea are cleaning their stair carpets using their Henrys, if they would be so kind as to run a big bath at the same time then it will solve the tidal conundrum. The shock to the local water board of thousands of baths being run simultaneously will mean they will need to suck in more water from the harbour to fill the reservoirs. The inflow will be great enough to guarantee all the tidal streams will divert towards the harbour mouth and at the same time give us a prolonged stand of high water so we don’t get stuck in the mud trying to enter (as I normally do). Don't overdo it with those baths or we could end up with a Thames Corryvreckan or a Mersea Maelstrom.
I'm confident it will all work. Fair winds and fair tides to all.