Oh my god! This is brilliant, Gary, but one of the most frustrating puzzles I've ever attempted to solve. I'm fairly good with anagrams, and in general, the English language, but I'm stumped as of now.
I've exhausted nearly roller-coaster related term, whether it be "FLOORLESS," "INVERT," "GIGA," "BOLLIGER AND MABILLARD," "INTAMIN," "ROCKY MOUNTAIN CONSTRUCTION," "PREMIER," "SIX FLAGS," "CEDAR FAIR," and more. I also tried the names of all of the Cedar Fair parks, and only one fits. I've tried the names of every roller coaster I could possibly think of, and while some fit, they obviously don't make up 5 words or 31 characters, even when paired with a park name or manufacturer as a logical sentence would have it.
So far, the only thing that actually fits is "BANSHEE AT KING'S ISLAND," which would make sense in the context of the hint sentence, but what would the other word be? I'm totally lost!