For what it's worth, I agree that a single
arbitrary measurement on any given day with a moisture meter on any boat hull
is not very useful. I have painted/repaired numerous boats in the SE U.S.. If I suspect a wet hull
(not uncommon in FL), I find it best to take a series of measurements over time (weeks or months) on the same spots on the hull and keep accurates records. This has usually given me enough informtion to make a comfortable decision on when/if the hull is dry enough to work.