I can't get behind the paywall.
Here's my one experience. About 14 people going down in two boats. The one thing the dude said at the beginning was..."there's a big rock early on. If you go to the right, it's heavy rapids. If you go to the left, it's easier. But make a decision. Do not get close to the rock. I was in the boat with the drunk people (me included). Either no one listened or no one really cared. We saw the big ass rock but couldn't avoid it. Our boat got capsized and sucked right up to the rock on the downstream side. We're just trying to get to shore and grab the coolers and loose on the way. We find a bank and just start hammering the beers and . We can see our boat. It's suctioned to the rock.
One dude (who made it to the bank) was under the boat (between the boat and the rock) for a short while. Maybe an hour later, we get a new boat delivered to us. The original boat is still hard stuck on the rock and they're trying to get it off. After that, everything was fine.