Ok, on the game zelda phantom hourglass, i found this cheat for beetle's ship.
You know how you have to wait a day when you buy something?
Well. not anymore!
First, go to the options on your Nintendo DS.
Second, go to time and date colum.
Third, change the day to the day tomorrow.
Forth, log in to the game and go to beetle's ship and then there should be something like a ship part or whatever you bought.
Hope it helps!
