RTA Guide/Shell Shreddin' for Red Coins
Shell Shreddin' for Red Coins is the fifth mission of Snowman's Land.
Run after the rollout after the box break instead of going neutral. A little less beginner-friendly, but saves about .5 seconds.
With 100 Coins
Note that in order to jump on the spindrift's head and be propelled upwards, it must be a certain distance away from the wall in slightly shallower water. Wait for it to move towards you a bit before jumping on it.