Erika Tiffany Smith to the Rescue

Trivia

 * Mrs. Howell is jealous of Erika Tiffany Smith because her name appears before the Howells' in the social register.
 * Although Erika agrees to go into partnership with Mr Howell to build the resort. At the end, she apparently changes her mind, saying only she has spent time with some charming people on a island (without giving their names.) Likewise, her logbook isn't any help. Not only is there no latidtude and longitude given, its written in Hungarian which the US Navy cant read. (This is injoke guest-star Zsa Zsa Gabor comes from Hungary)
 * The second movie made after the series ended "The Castaways on Gilligan's Island " does show The Island being made into a resort.