Still digging on Les Wexner/Epstein: Wexner had a yacht. I am still working on subs/other ways to get from St. Thomas to LSJ or GSJ. I wondered if maybe other private yachts would be the answer. Then I found an article that had this info in it:
The "Limitless" caught fire off the coast of the British Virgin Islands on March 6, 2017. None of the five crew and six passengers were injured in the incident. The vessel got into difficulties near Dog Islands, west of Virgin Gorda after a fire broke out in the engine room. 30-foot flames and thick black smoke erupted from the boat. The captain sent a Mayday call before giving the order to abandon ship. They managed to jump into the water before getting into the vessel’s tender and making for the nearby Scrub Island. Despite attempts to salvage the "Limitless", the superyacht sank a couple of hours later.
Could there have been some incriminating evidence on the boat and it was torched as an insurance policy? I can't find any sauce where Wexner replaced the yacht.