I rode Velocicoaster last week. I was in row 5 - I rode only once, I have a history of back issues and had already tweaked it a bit before riding, and once I got off was having trouble walking. I did go to hospital and I was admitted. I didn't get to ride it again during the trip but will be down in August and will definitely ride again. One thing to note - try not to have flip flops on as the seating makes it difficult to keep them on your feet and you are not permitted to sit on them - I'm nearly 6 foot tall and my feet were not firmly on floor of coaster. I personally love Hulk and think it is very smooth. I felt like I was thrown around like a rag doll on Velocicoaster - still liked it though. 
