This is what is the current Local Rules for the Worlds:

S7 penalties apply for verified infractions. For the first infraction the pilot will score zero for the day and a further infraction will result in the pilot being excluded from the remainder of the competition.

This is what I have seen that works in real life and would love to see instead in the Local Rules:

The penalty - the offending pilot shall receive a 10% reduction in their score for the first infraction, 30% reduction for a second, and then a zero daily score for any further infractions.