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Originally Posted by jsblanton
My evaluator also wants a whistle for any and all subs. I tend to agree with tomegun. But...I guess I'll give him a whistle for subs, if that's what he wants.
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The procedure here is to always use a whistle for subs since that informs everyone something is happening before the ball comes in play. It also makes your partner aware of this so that (s)he doesn't start the play before the substitutaions are done.
When it comes to using several tweets I do it sometimes, but I try to do it sparingly. One good signal is usually enough, but it has happened that I do several tweets, mostly on offensive fouls or travelling violations where I can have a tweet for stop the clock and another for no points. But this probably isn't nessesary either, nobody cares though (except for Alan Richardson, he's the only one I've heard commenting on this).