Most details about leasing a private yacht to drop by Isla Saona are explained in my independent write-up on How to define the most beneficial non-public tours to Isla Saona. Your charter commences in Bayahibe (that's just an hour far from Punta Cana) and provides you on your own https://augustrkcun.tribunablog.com/a-review-of-punta-cana-excursions-45235281