I have not capsized or collided as a steer, but I had one other inexperienced steer bring their dragons head over my left rear and nearly hit my bench 10 in a 2k. luckily my drummer made eye contact to me and gestured to look behind me, and I literally caught the head with my right hand, swung it back off my boat and kept going. I sorta call it my Matrix moment lol. Shows that the communication and eye contact between a solid caller and steer is EVERYTHING in those crazy 2k turns! As a paddler I also was in row 10 during an IDBF 2k, when another boat did the same thing-- lost their control of turn and the head came into the rear of boat. there was a very brief stop to get the boats apart and then the racing resumed. I have witnessed capsizes and capsized myself as an OC1 paddler. In races, as a steer you need to listen to the chase boats and maintain safety. There is judgement on whether it is best to paddle slowly and try to separate boats that contacted then continue if not capsized. All the races I have seen the chase boats come quickly to help count paddlers, right the boat or gently push the boat to shore- often with paddlers holding on for a free gentle push to shoreline. The most essential is to ask if there are nonswimmers ahead of launch, so they are paired with a swimmer in event of capsize. If everyone knows who cannot swim, they are mentally prepared to look after that person. Counting off to ensure that everyone is above water and not trapped under the capsized boat is also important.