I remember riding it its first year. I was 17 and yes, I was nervous. It was a stand-up with a loop. That is all I was thinking about when we started climbing the lift hill.
Also worth noting, the helix portion had water. I believe when you went around the bottom portion of the helix, water shot up. You never really got a chance to get wet, except for windy days maybe, but the idea was cool.
After years of riding other stand-ups, KC was a hurting machine as others have mentioned. I do miss it, but not the pain.