The older I get the less I can tolerate the sudden hard motion changes of Rock 'n Roller but Slinky Dog doesn't bother me at all; I love it. And I love that the ride is outdoors; makes it more fun for me. Plus when we rode Rock 'n Roller in December we watched as a healthy looking man in maybe his 40's exited his car at the end of the ride and fell immediately to the cement floor and injured his head. He apparently lost his balance for some reason. I know he could have had an underlying or other health problem but it was unnerving to say the least.