I went on it the year it opened. I remember being sorely disappointed because the park map made it look awesome and I thought it was some rapid type water ride! Yeah you're right it was just like The Rack at Camelot but my god it was awful. It was so slow and dull!
It did open, when I went when it was there it was open, I believe it was a travelling ride, the same type as Boneshaker AKA Energizer previously at Alton Towers.