[youngump]

Originally Posted by mick

Point at the bag and yell, "Off the bag!!!"
or
Hold your palms apart and to the side [e.g., on your left] and push them to your other side [e.g.,your right] . (Picture a defensive football player shedding a blocker to the side)

Those are the signals. I'd think the first one fits better here. The second one is more for a pulled foot.
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