Well erniedee, that actually leaves two: Sombrero Key and Alligator. Ironically one of these two are the best candidates for tours if we can ever get that far.
I am also pushing for some Little Lights of Mine of the reef lights, however, was told no new Little Light of Mine this year.
By the way are you a member of the Florida Keys Reef Lights Foundation yet? We are just getting re-organized and could use some help. Let me know if you are interested (I am in Orlando).