November starts the dry season, so snook and juvenile tarpon action should be picking up at Monkey River.
The mutton snapper action off the docks and beaches is slowing down (average catch was around 24 per day - Kevin caught 42 one day last week - could have caught more but he ran out of bait).
Try throwing in a line from the beach in December, January and February - reasonable chance of catching juvenile tarpon and and some good-sized snook in the early morning and late evening - use a light spininng rod (10-20# test) with small Mirrolures, spoons, lead head jigs with soft plastic bodies and live bait (try buying some conch or lobster head meat from the Placencia Village Co-op at the dock). Especially good is the sandy point just north of the Placencia Village dock.
If you have some spinning gear, bring it with you on your vacation even if you just plan to primarily snorkel - the cayes are good for fishing directly from shore (except from Laughing Bird - fishing is not allowed there and only catch and release from the Silk Cayes). (Kevin says its against the laws of fishing to have a rod and not bring it with you.)
Seeing quite a few tarpon around right now out at the cayes. December and January should be especially good for big tarpon down in Deep River and Punta Ycacos area (80-200 pounds).
For flyfishing anglers who just want a little fun on a 5-6 weight, yellowtail snappers and jacks should provide some nice action through the winter months.
Trolling for large black groupers should be very good after the full moon in November, December and January. Bottom fishing for Strawberry Groupers (and occasionally Nassau Grouper and big yellowtail snapper) will also be good in January and February. Let your guide know ahead of time if you want to take home fish fillets so that he can get you a permit to export your fish (25 pounds or less). Also, make sure to bring a cooler.
Mary, Kevin Modera Guide Services
AmbergrisCaye.com 
