Scorpion Tail
Noah Ark Family Park, Wisconsin Dells, Wisconsin
It might not be as tall as Insano, but the ten-story high Scorpion's Tail at the popular Noah's Ark Water park in Wisconsin is equally gut-wrenching. Why? Because it's essentially one giant, water-slick loop. It's not quite vertical, though considering you'll be hurtling through it at about 50 feet per second, that's probably a good thing.
But Scorpion's Tail packs an even nastier surprise for those willing to brave its sting: a freefall drop to get you started. Rather than gently pushing themselves off, riders stand in a capsule for a few seconds until the ground abruptly gives way. Suddenly, that loop makes more sense, as it's the only thing slowing you down from the 2.5 gs of gravitational force driving you through the spray. Yikes.