Straight out arm with extended closed fist for 11.
Thumb up with fist for 12 or more on field.
Thumb down with fist for 10 or less on field.
Wings have their own system with extended arms toward midfield or toward pertinent goal lines, referencing their closest player being on or off the LOS. I've seen some use 2 arms, indicating one on - next one off, for trips or multiples to one side.
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Assumption Is The Mother Of All Screw-ups.....
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