[KWH]

"Whatever hurts them the most" or "Whatever does more damage" are "old school" thinking and have no place in todays game.
Additionally, attempting to officiate using that logic will result in incorrect enforcements on many occasions such as fouls during loose ball plays!

High School rules are very simple!
ALL FOULS ARE ENFORCED FROM THE BASIC SPOT THEREFORE ALL YOU NEED TO LEARN IS HOW TO DETERMINE THE BASIC SPOT!

Here is how:
1) RUNNING PLAY - Basic spot is the "End of the Run"
2) LOOSE BALL PLAY - Basic Spot is the "Previous spot"
3) DURING A SCRIMMAGE KICK (Other than during a try or a successful field goal) - "End of the kick"
4) The basic spot is the succeeding spot for those fouls listed in 10-4-5

Unless otherwise listed in Section 10-4 and Section 10-5 of your rule book a penalty for a foul is enforced from the basic spot with the exception of a foul by the offense which occurs behind the basic spot during a loose ball play, running play, or a scrimmage kick (other than a try or successful field goal) This particular foul is enforced from the spot of the foul.

Read Rule 10! Then re-read Rule 10!!!!!
Don't listen to old "Rules of thumb" as they will bury you!