I actually posted that in my first post above, then before actually finishing the post, I remembered the Mega Man Zero games. The hoverboard stages on MM8 are nothing compared to the crappy level designs and cheap deaths of the Zero games.
So yeah. I ended up deleting it and posting about the Zero games.
Anyways. Here's a tip. If you mute the sound while playing those hoverboard parts, they're much easier to get past and you'll probably complete the stages every time without dying. The reason you died, and the same reasons I did was because every time you heard the sound, they did it way too early and you would react to the "Jump! Jump!" instead of waiting until the edge. Muting the sound fixed the problem for me to where every time I get there, I just mute it and fly right through them. Both of them.