Be extremely careful! I am 14 years post op, got on one bumpy roller coaster and the symptoms are back. They say it's meniers disease, but the symptoms are eerily similar to my past issues. If you go on them, keep your neck area relaxed during the ride. Tightening the muscles will cause pain
Hi and welcome to the Chiari forum.
Personally I would not go on something that is jerky.....or would put you at risk for injury...keeping in mind, even tho you do not have symptoms now, that area of your cervical spine is weaker and may be more susceptible to injury.
Only you know how your body is doing and if you should chance it....maybe try a few more easy going rides to see how you feel afterward and build up if all is well....
I am only 6 yrs post op and I know I would not be going on roller coasters anymore....but I am much older then you.....and I love roller coasters....I try to find the virtual reality rides to watch on line to help give the sensation... without the risks.
Keep us posted on what you decide and how it goes.