I thought it would be cool to start a thread to find out what some of the, if not the, worst experiences some of you have ever had while paddling/floating. This topic may cross the rafting, kayaking and canoeing forums, but it relates to them all. I just think it would be exciting to hear about bad situations (huge rapids, falling out of the boat, forgot something, broken/deflated boats, etc.) that people have come across in their adventures and how, and if, they overcame the situation to rise above the scenario.
As for myself, the worst thing I can think of was I was tubing a river in Texas, the Guadalupe River, which is a big party river with some dangerous spots. A friend and I were tubing along and we heard a low rumble for quite a while. We were young and inexperienced with the ways of mother nature. The rumble ended up being the worst rapid/hydraulic on the entire river, and the water level was higher than normal at the time. I was floating perpendicular to the river (we were curiously alone along this stretch of the river) and he was floating backwards and parrallel with the current. I heard a moan/scream from him (40 feet ahead of me), and when I looked over there all I saw was his feet sticking up in the air, going down. The low rumble was now very evident and not so low any longer. I realized he had gone down into a tumultuous hellhole (I believe it's considered a category 4 rapid). I had one exit point but I couldn't access it quick enough so I was next. I went over the fall, about a 3-4 foot drop, and it was almost a perfect hydraulic. I did all I could for about 15 seconds to balance on the tube in the face of danger, then it flipped me over. It had luckily propelled my buddy out of the current, and he was downriver obtaining his tube. It flipped me over backwards and I was injected downwards. It had to be 8 feet deep and the flow was dragging me around and against the rocks for a good 25 seconds. It popped me up and I reached for the lone rock that was out of the water nearby. I dragged myself up onto it (and it's surface area (above the water) was about 4" x 5"). All around me was horrible turbulence and my buddy was getting my tube. Once he got it I had to muster the huevos to again jump into the rapid and flow with it so that he could help to assist me out of the water about 20' down river. I was a bit banged up and it still stands as one of the most intense moments of my life.