Yes, that helps a lot. Thanks, Bill. I had been thinking that the crew weight to windward figured into changing the boat's center of gravity and, therefore, also figured into reducing heeling moment. I still don't understand why righting moment and heeling moment are not equal and opposite, but that's okay. I'll just take your word for it and have faith that it is so.

Somebody mentioned something about this thread being so incredibly long. I think it is because debates and explanations about engineering questions are like debates about sailing rules -- never ending. There's always another "but what if".