SECOND ROLL: As Knott’s Berry Farm (D1)...

SECOND ROLL: As Knott’s Berry Farm (D1) puts the final touches on “Boomerang,” its new state-of-the-art roller coaster (above), the coaster it replaced sits reassembled but covered with three inches of snow in Coeur D’Alene, Ida. . . . In 1975 the “Corkscrew” was the world’s first ride to feature two “360s,” or full loops. . . . Shipped to the Northwest in September, the ride will open again in June, said Richard Anderson of Silverwood Park.