Joseph said It appears to me that a boat would not necessarily have to "unwind" back to the error, but is it compelled to re-sail the rest of the course once having corrected the fouled mark?

 Moot if it had properly met the definition of "Finish" and did not *continue to sail the course* to exonerate in any fashion?

I sat in on a hearing that had Arbitration applied to the two boats that had violated a mark by approaching it through a restricted zone.
It remains a question in my mind whether Appendix T allows for anything other than 44.1 or 31 that is not uniquely defined in Part 2,

 or even if the scope of Arbitration can be changed in the race documents, NoR or SI. Rule 28 being a clause in Part 3 "Conduct of a Race".

• Unless the protestee immediately admits the breach, it will probably be a he said she said situation, without witnessed in the Arbitration Meeting, and the Arbitrator will probably need to decide that arbitration is not appropriate and close the meeting and send it to a full hearing.
• If the protestee admits the breach, it is very likely that the advantage gained will be more than what will be compensated by a 30% Post Race Penalty, or that the Arbitrator will be unable quantify the advantage, or that RRS 44.1(b) significant advantage may apply, and once again decide that arbitration is not appropriate and close the meeting and send it to a full hearing.