1. First Purple Coin

Run forward and take the first Purple Coin that’s floating right above the first pair of cannons you will see.
2. Second Purple Coin

As you move forward, you will find the second Purple floating beside two Gold Coins. After you’ve taken the second Purple Coin, be sure to jump for the second Purple Coin as soon as a cannon ball is close to the trio of coins. This will make it easier for you to hop on the cannon ball.
3. Third Purple Coin

After taking the second Purple Coin, take the upper decks so you would land the upper deck where a group of Gold coins are resting. Among those coins is the second Purple Coin. After taking the second Purple Coin, take the lower deck.
4. Fourth Purple Coin

As you move forward to the lower deck, continue on and take the fourth Purple Coin that’s sitting in between two pairs of Gold Coins.
5. Fifth Purple Coin

Move forward until you find a row of coins with another Purple Coin in the middle. You will also find a pair of cannons beneath this group of coins. Make sure to hop on the cannon balls that are blasted so you’ll have the right boost to reach the fifth Purple Coin.