Cheesy, you do understand that PA2016 is actually talking about holding that runner like a 1b, right? You would never do this. If you need to get that out at home, you have your infield in. 3b is roughly bag level deep but 3-4 steps off the bag. Hovering in that vicinity will prevent too large a lead from R3. He will not score on a fielded ground ball unless it is a complete nubber.