the best luck I have had in finding coral WAS to follow the construction sites in different counties that I knew were ancient coral beds. When that slowed down so did my collecting of coral at that time. I found a killer coral site that covered about 60 acres, I found it when they dug for the water mains, I got about 5 tons of good coral there.About 3 ft down inthe trench was a 2 ft thick wall of ancient spalls that ran over 100 yards long.fire pits dotted that place, they were everywhere. I miss stuff like that. I took Claude and his girls there and we had a blast.