"Didn't there used to be a rule that if a third party witnessed a foul and no action was taken by either party the third party could protest those involved and they could both be flicked? HUGE D!CK move but if you really feel the game is suffering with how it's being played now that is one rule that could force the actions you're looking for."

I don't always see this as a D!CK move. There are time when a foul leads to an advantage to the boat but does not really effect the boat fouled. The person fouled may say no problem but an advantage was gained over a boat that was not fouled. If the person does not withdraw see no problem with a 3rd party protesting. Under the rules the person should withdraw but if not should be held to account(even if by a 3rd party).