What makes a float serve hard to predict?

Little or no spin lets the ball knuckle and move.

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  1. Maximum topspin
  2. A very high toss
  3. Little or no spin ✔

Why: A float serve is hit with no spin, like a knuckleball in baseball. Without spin the ball can dart and wobble, so it is hard to pass.

Huh, didn't know that: Karch Kiraly says a good jump float crosses the net by only a foot or two.

The dad joke
Why did the float serve bring a coat? It liked the cold air.
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References

Answer: Little or no spin. A float serve is hit with no spin, like a knuckleball in baseball. Without spin the ball can dart and wobble, so it is hard to pass.

  1. USA Volleyball: Five Keys to a Wicked Jump Float Serve usavolleyball.org/resource/five-keys-to-a-wicked-jump-float-serve
    it doesn’t have spin. It’s like a knuckleball in baseball.
    Checked 2026-10-12.

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