GEORGIA PEACH, my sleuthing for the magic island continues. Besides Adams Key and Elliott Key, I have eliminated all the islands (all named keys in this vicinity) from Key Biscayne south. This includes Palo Alto, Angelfish, Pumpkin, Porgy, Rubicon Keys, Meigs, Reid, Totten, Old Rhodes, Swan, Linderman, and Arsenicker.
The better news is that I then refocused north of the Tuttle Causeway. A private island has popped up just west of the northern end of Harbor Island. It has a dock, it appeaars to have the right type of trails, and it has a perfect camera angle of Miami with two causeways in front of it. Although it has no name, this could be the island we have been looking for. The Google Earth coordinates are 25 d 51' 10. 57"N and 80 d 09' 47. 62"W. Comment on the validity of this island is welcomed.