JME
I went for a bit of a swim myself 2-3 years ago when the sand disappeared under foot in some fast water at Nauset Inlet.
My stripping basket made an excellent float and I paddled myself to shore, no worse for wear.
I stayed on more solid ground the rest of the day.
Good thing, I saw what I believe was a great white shark soon afterwards.

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"The first of April is the day we remember what we are the other 364 days of the year"
Mark Twain