[just another ref]

Originally Posted by potato

we can't just call it illegal because the official aren't sure when the player ended his dribble and established his pivot.

If you're not sure you can't call much of anything. That is what comes with experience in this business, an increased ability to see the play and be sure. You have been told the appropriate rules. If you're really interested, take the time and consider them while on the court. If you're looking for shortcuts and technicalities to use in "Gotcha!" situations in your pickup games, you came to the wrong place.