I never hit that rock garden...i'll need to try it...there's another race there this year. I remember a ramp during the race....there was no back side to it...so you had to jump off it. during the race, they said it was optional and it would be well-marked. well, it wasn't marked at all. Luckily for me, i was dead tired and didnt have much speed...so i was able to stop before I launched.