You should watch the videos from Yachting Monthly on Youtube. They have a crash test boat and show techniques for things like plugging broken seacocks to dismasted sailboat. They actually dismast a boat in 30 knots of wind and show how clear it. Watched a ton this morning. Good stuff
https://www.youtube.com/watch?v=H5PDuXvqL7c
https://www.youtube.com/watch?v=H5PDuXvqL7c