This glitch may potentially cause damage to your game, because it involves opening your system while running the game
Have your telescope equipped to a button as you sail towards an island in the distance. Open and close the disc cover quickly while at sea to stop the disc. As soon as you hear the disc spin up, get out your telescope and zoom in on the island in the distance. You'll see the large gray mass turn into the island, bit by bit as it loads! Fire Mountain and Ice Ring Isle are good ones to try on this. If you continue sailing, you can sometimes get much closer to the island than you would normally before it loads, even right up against it.
Submitted by: Thomas Pitt