This time is VERY good !

The way I'm able to jump higher from the 4th bounce is frame-perfect. You have to hold jump and release it on the first frame after bouncing. Doing that makes it easier to be very close to the rotated spiked ball.

Then on the last bounce, if you wanna be faster you gotta reach that edge spot. That means you have to jump as soon as possible and that's where the rolling bounce is useful. If I dont roll bounce, I cant reach that spot.

Finally, the last WJ was very good and well timed.