 Miller designed over 140 roller coasters and contributed over 100 patented technologies to the roller coaster industry, some of which are still being used on modern-day roller coasters.Sky Rocket was considered the largest of its time, described as "mammoth" by the industry with a height of and a track length of .It was renamed Clipper in the late 1940s, and then again to Big Dipper in 1969 after Funtime purchased the park.