Well the mangrove snapper spawn is on and judging by the crowds of boats in some areas, it looks pretty productive. Mangrove or Grey Snapper spawn in the summer on the reef south of Key West. These fish swim out from the gulf and inshore waters and stack up on the edge of the reef in certain areas. They tend to congregate in 50-80 feet of water.
If you dive in these areas you will see walls of mangrove snapper on the bottom basically paving the bottom. This fast fishing as soon as bait hits the bottom the fish will be on on it. Most of the challenge involves getting the larger snapper to eat before the little ones get the bait. Bait of choice for this is usually pinfish, medium sized. You will be surprised at how large a pinfish a nice size grey snapper will crunch up. The best bite tends to be in the evening and night.