My family and I go to Bahia Honda every year for 10 days. Leaving on the 18th coming. You need to make reservations for Bahia Honda 11 months in advance, but there are places up and down the Keys open in November, its a slow season.
I recommend against Key West, it's no longer family friendly, and the OPBA races are in November, so it's hard to get a place there.
Marathon area is great in November, as is Big Pine, Islamorada and Tavernier.
I have had friends stay at the
Seashell Beach resort on Grassy Key, and they loved it, and it was very inexpensive. Grassy Key is next to Marathon
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Common Sense is learning from your mistakes. Wisdom is learning from the other guy's mistakes.
Fr. Frank says:
Jesus liked fishing, too. He even walked on water to get to the boat!
Currently without a SeaCraft 
(2) Pompano 12' fishing kayaks
'73 Cobia 18' prototype "Casting Skiff", 70hp Mercury