Well, if you get on the front of Colossus, it is a very smooth ride and shouldn't cause too much stomach churning. Nemesis Inferno is a little more rough, but I think that will be fine, maybe you should see if anyone knows if it is smoother at the front, I am not sure. As for SAW-the ride, I haven't been on it, but I hear it is very rough and chucks you about alot, so maybe avoid that one. Alot of the flat rides are rough and lots of spinning, vortex spins and swings so that might be a bad one to go on. Samurai throws you about, and sometimes it can get really rough. (Sometimes your seat will spin more.) There is definately a couple of rides you would probably be fine on, Colossus for one, although quite a few of the rides are tummy turners.Leon