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Z,
The procedure might be proper, but not always required. I really only use a preliminary signal when I have to sell a call. On most shooting fouls where the basket goes in, I never seem to use a preliminary signal at all. It comes down to where you live and what is required by those around you.
Peace
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Let us get into "Good Trouble."
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Charles Michael “Mick” Chambers (1947-2010)
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