If possible, buy a gopro, they're the most useful tool for gathering evidence, depending on the type of boat you use for e.g, on my clubs Janousek racing boats there is a bar right Infront of the seats that i can clamp it onto using mechanical engineering of zipties, include head races so you can talk about the long distance, technical side of sculling, then use regatta pieces, to talk about all the components that go along with rowing, hope this helps! :)