Hey there! I think that there is a lot of differing opinion on narrative nonfiction. In my research, I’ve found a LOT of people saying that they expect a finished manuscript from first time authors. Others say they want a proposal. Still others want you to have the manuscript finished before you submit but ALSO want a proposal.
For me, I’ve decided to go ahead and have both on hand before I start submitting to agents. So I’m finishing my book right now and then will draft a proposal before submitting. Which is hard because I am impatient and have over 75% of the book done and frankly I just want to start going out to people with it. But trying to be patient and have all my ducks in a row first. I think that there are no set rules though so hopefully if an agent is interested they will still wait for the finished manuscript if you tell them you don’t have it right now.
🙂 Happy writing!