Originally you were suppose to be able to get the double magic meter after getting the gold gauntlets at the end of the game. But with this glitch you can get it with only bombs and hover boots. What you do is aim for in between the big stone that you lift with gold gauntlets and the wall. You then superslide and pause and switch to hover boots. Then you should go through the wall but make sure that you aim to the opposite way of the loading point.