As a jury we listen to the evidence of the parties and their explanation.

Firstly was there a change of course as if not there is no breach.

If there was was it a holywood or genuine, we get both.

Only experiance and your sailing can help you 

Port is always at rusk but starboerd often exagerates.

We the jury find the facts, and the better the jury the beter the decision gennerally.

The case rejects consideration of how competently the crew maneuvered. 
Thus the competence determination does not change with the competition level. 

@Lars - having done a number of WASZP events, I found the RRS 42 rules easy to see and enforce.

The world sailing judges manual changes on improper act or ommission in each version, each seeming giving judges more room for interpretation. Just track the change next time, it may be what gordon and i may expect.
The old bad race management hidden behind the word may not shall,, may not be tolerated.
A time of change perhaps! I believe for the better if we are to improve standards and improve the sport.

To me once a boat had done a 44.2 set of turns, they have not initially finished and there can be no other score but the last finish.

Other rule breaches are something else which really should be protested by boats.

There is no reason for a rc to act if they score the finish after the turns.