Just thought I'd share this link (Kansas doesn't get many hits on Fodors). The video made me queasy.
http://www.foxnews.com/travel/2014/0...ntcmp=HPBucket
Sounds like 4 people at a time. Any insights on (a) how the company guaranties no one falls or jumps out; and (b) do you climb the stairs to ride (looks more like you ride the nearly verticle ramp next to the slide)?

Looking at the video again, my guess is that sliders ride on a sled perhaps backwards up the belt next to the slide. At the top, perhaps they are simply shifted over to the slide, and then weeeee (or in my case, peeeee)!

The video arguably makes the incline a little more vertical than it really is.

That is a tall one. Spent part of a day sliding down the one in Palm Spring - which is "only" seven stories high. You just crossed your legs, crossed your arms across your chest - and away you went - feet first - down the water slicked slide.

At the bottom - you slowed up by sliding into a trough that was partially filled with water.

Little kids were also loving it - and the next day - I noticed I had a big bruise on the side of my right calf and bum. Guess they took most of the bounce at the bottom but never felt it during the couple hours I was sliding as many times as you could hike up to the top.

This one does look like the 4 riders will somehow be strapped? to a sled type ride.

This is built by a company here in Texas called Schlitterbahn. They started as a small family run water park in New Braunfels, TX. Now they have several water park locations. The company has an excellent reputation for building water rides all over the world for other water parks.

Part of the ride goes uphill. They invented the uphill water coaster technology.

They also have tons of lifeguard trained personnel all over the park. I've been taking high school groups there for twenty years and always feel like they are safe and being well taken care of.

While I think that Schlitterbahn may do a lot of good things with their park, they made the mistake of opening the Kansas City park without enough attractions and people have been slow to flock to it.