Re: 10,000 islands, which flies for everglades in december?
If I were able to use only one fly for a shot at a backcountry slam in the Flamingo to Shark river area right now (not far from Choco area) it would be an all white seaducer with jungle cock eyes on a 1/0 or 2/0 , 3 to 4 " long. Reds, snook, tarpon, trout, mackerel, jacks will all eat it. Just a few strands of that flash that's in the gold and green range.
The water temp today at the reef edge in Key Largo was 78 degrees. If it doesn't drop much, you may well hook into some good size tarpon.