well you just sold me, my wife was hugely disappointed that we only found 3 or 4 total in 8 days in Destin. We found out later that there is a sea shelf 1000 feet off shore that catches shells and you have to scuba to get them
We didn't have much luck, the weather was completely still so not a lot of stuff had washed in. The water is only 3-4 feet deep a hundred yards out so there was a lot of bottom to cover.
We were at the southern end of the island, there is a publiv beach and a recreational park there. And a light house.