World Sailing have released their Misconduct Guidance first edition. It's very comprehensive and written for everyone - Officials, Competitors and Support Persons can get a great understanding of how to handle these matters.
http://www.sailing.org/tools/documents/2017WorldSailingMisconductGuidance-[22804].pdf
I have most frequently penalized a boat under this rule when in a protest hearing a boat admits that she knew she broke a rule but didn't take a penalty - usually on the basis that she thought she would get away with it. I would welcome opinions as to whether or not I should increase the DSQ for breaking the rule in question to DNE for also breaking rule 2. In the past there was no doubt that this should be done.
So our view was that any Rule 2 at the event would be DNE unless some exceptional circumstance arose, although none of us could articulate what this might be.