How do you get over the cliff by the two fountains to the sling star on Purple Coins on the Summit?

Question

This is from Super Mario Galaxy, by the way.

Answer 1

This is one of the tougher purple coin missions.  Start out by picking up the two coins at the beginning, then look up and to the left.  There is a ? coin up there.  To get there, backflip, then spin onto the pillar, then just jump over.  Grab the purple coin above the ? coin, then get to work up here.  There are three coins to your direct right, and four to your left.  Go back to where the fountains are, and start from there, use the same path that you did in The Frozen Peak of Baron Brrr.  Most of the coins are in plain sight, and require at most a backflip to collect.  Once you have reached the top, you should have 35 coins.  Now, scour the area where Baron Brrr was.  There are some purple coins in the right side of the cave, behind the normal coins.  Once you are done up here (you should have 53 coins), so back to the very beginning.  You will notice that there are two coins behind the slide; be sure to pick those up.  Now, you will follow the same path you used to get to the summit, with a few exceptions.  When you first get the Ice Flower (be sure to get the coin above the Ice Flower), head over to the ? coin near the fountains.  There are two coins on rocks near there.  (One of them will require a backflip followed by a well-timed spin.)  Also, visit the area where the Super Mushroom was (and for that matter, still is), because there are a couple of coins up there.  You should now have 78 coins.  Now, head up to the summit.  Be sure not to miss the coin near the first sling star.  None of the coins up here should really come as surprises to you, so just keep heading up toward the top.  Before the second sling star, you should have 85 coins.  Here, you will notice that the boulders are gone.  Just keep climbing up, grabbing the coins as you see them.  Before the third sling star, you should have 90 coins.  Once you reach the summit, you will have 98 coins.  The Toad here says something about a long jump, and you look into the distance.  You see a couple of purple coins shining in the distance.  You know what you must do.  LEAP OF FAITH!  The last two coins are here.  The star will appear near the beginning of the stage, which is exactly where the sling star here will take you.

Answer 2

Hmmm.... Try this.

At the two fountains, jump on to the fountain, then jump on to the next one, and then triple jump on to the cliff. Use the sling star to start traveling to the summit.

(from a walkthrough at http://download.cheatcodes.com/faqs/7042...