I don't understand why you are focused so much on fouling. Good PnR defense doesn't require being physical, it's about being in the right positions, knowing when to switch, being able to hedge and recover back to your man. None of that involves fouling if done correctly, even with the more enforced rules. In fact, the defense should use the rules to their advantage. If you go the same path as the guy you are guarding the screener would have to move to get you. It got better last year but has reverted back to the old style of our guards doing a horrible job of navigating the picks. Sometimes they get blown up by a pick that they know is coming several seconds before it happens.