When the Professor asks the Skipper if he hid the nails he made out of the plastic explosives, the Skipper replies that he buried them where nobody can ever find them. Just then the camera cuts to the monkey uncovering the nails. However, when they show a close up of the nails, they are clearly made of metal, not the grayish-colored plastic that the nails were supposedly made of.
The plate should have made an enormous explosion, given the amount of plastique involved -- instead it's shown making a smaller blast radius than the golf balls.
In the final scene, the monkey throws a regular plate at the professor, Gilligan, and the Skipper. They think it's was one of the plastic plates and strike the three monkey pose,(See No Evil, Hear No Evil, Speak No Evil).
Lovey: Thurston, don't just stand there, run!
Thurston: A Howell never runs in the face of danger.
Thurston: He walks very fast!
Skipper: The golf ball it exploded!
Mr.Howell: A golf ball didn't explode, it was just plastic.
Mary Ann: Plastic doesn't explode.
Professor: But plastic explosives explode!
Ginger: My jewelry!
Mr. Howell: My golf ball!
Skipper: My nails!
Mary Ann: My dishes!
Gilligan: My teeth!
Mrs. Howell: My goodness!
Theme of episode: Innocent objects can sometimes turn out to be deadly weapons.
Rudy LaRusso played power forward for the Los Angeles Lakers.
Thurston: The first thing you do is get a good grip, and then you address the ball.
Lovey: Hello, ball!
Is an allusion to the Honeymooner's 1955 episode "The Golfer", where Ralph and Norton try and learn to golf from a golfing book.