Block / Charge Situation

[Freddy]

I appreciate this particular discussion. Back in the early 70's our veteran high school coach taught us to always put a foot OB so that the dribbler couldn't possibly get around us on that side. "Take the charge!", he'd say.
When officiating in the 80's and early 90's, I acknowledged no problem with this and recall no rule against it.
When coaching in the late 90's and early 00's, I coached defenders the same way.
When resuming officiating in the mid-00's, I see that a rule change must have taken place. Either that or my high school coach was incorrect and I wasn't as up on the rules as I should have been.
Last year I polled a variety of varsity coaches on this "legal guarding position = in bounds" issue, and about 70% of them got it wrong.
Of course it takes a while for the rules to catch up with the coaches, doesn't it!