Never mind, I finally figured it out.
I'm confused how to release it. I can move the arrow until it hits the sweet spot, the whole time I'm holding the left button. If I keep holding either D or A, the arrow will continue to move around the oval. So, once I get the arrow to the far right side and it starts to rumble, I'm still holding down the left button, do I press right and left simultaneously? Am I supposed to quickly switch from left to right? I'm confused.