Boost Before Slow Surfaces For Maximum Effect

In order to get the most out of your (Red Mushroom) boost, you need to release it slightly before the hit surface you want to use it over.

This is because it takes a few split seconds to get up to its maximum speed. The boost first accelerates and then maintains a higher speed than usual.

You do not want to have the accelerating phase of the boost as you are on the surface so use the boost slightly before you are going to hit it for maximum effect.