[just another ref]

I waited for somebody else to make a reference to this and help me start but nobody did, so here goes. Quoting from
POE #4: The MEASURING up of an opponent (TAGGING) is hand-checking, is not permitted, and is a FOUL. These terms,
measuring and tagging, suggest only a very slight contact to me. With a very light touch a defender can help himself to keep a constant position in relation to the dribbler and help himself by feeling a change of direction perhaps before it could be seen.

Quoting again: DEFENDERS ARE NOT PERMITTED TO HAVE HANDS ON THE DRIBBLER! (their exclamation point, not mine) Hand checking is not incidental contact; it gives a TREMENDOUS advantage. Now we get back to the hard part, judgment. Obviously, like other calls, there are a jillion degrees of hand checks. But, when the defender places his hand on the dribbler, no matter how lightly, it is a deliberate act and the way this POE is written, if it was called a foul with every place of the hand, how could anyone complain? (What percent of coaches know what POE stands for?)

Bottom line (is that sighs of relief I hear?) is that if the hand check gains the defender an advantage, it certainly should be called. If it doesn't gain him an advantage and he gets called for a foul, won't he stop doing it?