Well, I for one can testify that it is VERY dangerous! I nearly drowned on one a couple of years ago. Some idiot thought it would be cool to try and tip everyone over. Well, I nearly drowned after falling off; and this jerks wife, she almost drowned to and, well let's just say she did not speak to him for the rest of the cruise! You are being pulled so fast, and when you are in the ocean (with the waves) and the different people on board, there is no way to predict what will happen. I made it back to shore thanks to a guy on a jet ski - and I was really exhausted by the time I got there.