You forgot rule #1... The Captain is in charge. This is the most important. In an emergency, or in a critical maneuver there is no time for a group decision. The Captain should be giving the crew direction. And the crew should be paying attention.

And of course my favorite rule for the marine head - if it did not come out of your body it does not go into the head. This includes toilet tissue. Empty the trash cans in the head every day and there really is no problem with this rule. After 20 years with this rule we have never had a blocked head.