For you sleuths out there in cyberspace, here is some more food for thought.
I checked each year of this Aviation Accident Database for Florida crashes that just might be relevant to this mystery plane Randy found.
AVIATION ACCIDENT DATABASE
http://planecrashinfo.com/database.htm
Here below are three posibilities. There may be more and you can look yourselves. Or, perhaps it is an undocumented crash relating to drug smuggling or such or maybe a junk plane disposal.
Let's try to help Randy figure this out.