potential spoilers
Okay, so I was at the Temple of the Ocean King where you have to draw the "sacred crest" on the red door. Did that and made it into the room, where they tell me to place the new sea chart onto the old one. So after literally 45 minutes of trying everything in the book to figure out how to do it, I slam the DS shut out of frustration. "DAMNIT!" About an hour later, I open it to give it another try, only to find that the trick to placing the new sea chart onto the old one was to close the DS! Pretty silly but it gave me a chuckle.