Izzy B; Sorry to get off topic, but to answer your question. There were silver rockets on the lagoon platform in the 50s, 60s and early 70s. There may have been a ride after the Monongahela Monster, but I'm not sure. There was also a ride called "The Octopus" that was very similar to the flat rides they've been describing on this thread. It was located next to the Carousel by the Paratrooper. It had a name changed a few times so you may be thinking of that ride since it was ground level and not on a platform. The Octopus ended up at Idlewild with a different name. I rode it in the 90's at Idlewild and was motion sick for a good while. Kennywood had a habit of shuffling rides off to IdleWild and the New England park they owned, and then bringing them back a number of years later under different names. So names get confusing and were sometimes interchangeable with different attractions.