I hate roller coasters also, and the water drop coaster is horrible. I really don't enjoy getting soaked. My problem is under the hood working on my instrument. At 400 AGL I freak and take off the foggles. Intellectually I know nothing can happen, the CFII is sitting right there. But I need to get down to 200 AGL for the checkride.
As a very wise person explained to me....I only need to do the 200 AGL once, and only once, at the checkride. After that, my personal minimums will be 400AGL, which is perfectly reasonable.
Think of that for the CFI ride - you only need to demonstrate the spins once, for the checkride (but do them correctly!).
Another option - find a very considerate acro instructor, explain the problem and work with them in incremental stages until you can tolerate the sensations.
As a very wise person explained to me....I only need to do the 200 AGL once, and only once, at the checkride. After that, my personal minimums will be 400AGL, which is perfectly reasonable.
Think of that for the CFI ride - you only need to demonstrate the spins once, for the checkride (but do them correctly!).
Another option - find a very considerate acro instructor, explain the problem and work with them in incremental stages until you can tolerate the sensations.