Revealing mistake: While they are at the front or side of the damaged boat, you can see that the dark windows above them are obviously painted on, rather poorly in some spots, and not real windows.
Gilligan's Island (1964)
1 revealing mistake in Goodbye Island
Starring: Alan Hale Jr., Jim Backus, Bob Denver, Natalie Schafer
Visible crew/equipment: During the dream sequence, when Gilligan starts a showdown with Mr. Howell and the Professor, someone's face appears in the window in the background for a second, and it's none of the castaways - someone in the filming crew most likely.
Eunice Wentworth "Lovey" Howell: Anyone who says money can't buy happiness doesn't know where to shop.
Don't Bug the Mosquitoes - S2-E12
Trivia: The Wellingtons, who sang the Gilligan's Island theme song, appeared in this episode as Gilligan's favorite group The Mosquitoes.
Question: Why did the Howells, Ginger and Mary Ann have so many changes of clothes with them? It was only a three hour tour.
Answer: I've been binge watching it, and a couple of times trunks with costumes have washed ashore, and in one episode the professor figured out how to make thread for weaving cloth.
Answer: Bob Denver answered this when he was on a talk show hosted by Pat Sajak. He said they were going to write into an episode where the castaways found all these clothes, but it got too complicated, so he said, they decided, "who cares, it's only a TV show," and forgot about it. So the writers and actors even asked this, they just never bothered to address it.