I remember when I first saw Viper back in the early 90's, it looked unrideable as it was so high and had so many inversions. Looks like my initial perceptions of the ride have come true, because I now find Viper to be virtually unrideable, well, at least if I don't want a headache afterwards.
The ride features a steep twisting drop that leads into what was (and probably still is) the world's highest loop, followed by a turnaround into two more back-to-back loops. There then follows some very harsh mid-course brakes, before the ride enters a Pretzel Loop and then a double Corkscrew.
There are quite a lot of trim brakes along the way, but even they don't stop the headbanging and roughness of the ride. Viper used to be one of my favorite rides, but each year I ride it I like it less and less. My one ride in 2001 was nothing short of awful, and I vowed never to ride it again! However, I rode it twice in 2002, sitting in the front of rows two and three, and it was not as rough, and was quite enjoyable and intense.