It happened just days ago; one would think the water was probably pretty cold- lord knows it's cold here. A red flag popped up for me in another article when I read "inflatable kayak"...maybe they're fine but it doesn't sound like something I'd paddle around an ocean bay. It puzzles me why he couldn't just hold on to it unless he was too cold.
When I'm out in the boat fishing in the lake, I do occasionally take off my vest or at least unbuckle it in glass-calm flat water. Especially when I'm sitting down. No freak wave could possibly come along and never once in my life have I ever been out in the boat alone. If there's any "chop" at all I have my vest(PFD) on.
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“I'd rather have questions that cannot be answered than answers that can't be questioned.” —Richard Feynman