How many book proposals do you write over a given period of time? Do you basically write proposals on a near 1:1 basis with projects, or do you write a lot of spec proposals just to see?
No point in mind, merely curious. I'm tempted to generate a double handful of book proposals just for practice, the next time I have a decent sized hole in my writing schedule. It's something arcaedia advised me to do recently. That's also how I came up with Mainspring [ Powell's | Amazon | Audible ] in the first place after all — during a proposal binge. (Which reminds me that some day I'd like to write The Sun Gun.)