If you go to a spot where a triforce piece is supposed to be before your supposed to find it (i.e. right when you get your grappling hook)look at a chart on another saved game where it's at, and try to accuratly guesstamate where it's supposed to be. If done correctly, you'll pull up a peice of crap pot with barnicles on it or somthing of the like, and an enemy will spring up from the water, attack you, and go back under. I tryed this on outset during the day, but I'm sure it works elseware too.