First about your question: I don't know.
I think that trivia is an excellent idea. There are many members who have great knowledge about yachting and everything that is connected to yachting, so this could be a nice topic to exchange that knowledge about interesting things that doesn't belong in existing topics.
There is similar topic on another forum about F1. In less than 6 months it grew to over 40 threads. It works in a way that each person who answers the question must ask the next one. If there is a story behind the question, that's even better.
Not only this could be fun and interesting... but also very educational.