I do it in song form with +1's and +2's, and alot of sprinting. I have done it with just 3 +1's, barely. Toss in a +2 and its easier. I find fish form corners poorly and the wobbles sometimes catch you up on obstacles.
Advice: go around the course several times not worrying about speed, memorizing where you need to be high, where low, and where you turn. When you sprint, be careful not to be aimed at something or you will land, and stop.