I wrote a partial found it log a couple of days ago and I thought I had selected save for later. Now I can't find where I would access saved for later logs, and it seems to be in the Queued tasks list, so I must have hit finish. Is there any way to retrieve and edit it before sending?

Editing of queued tasks is not currently available. It's on a to-do list for a future release to allow editing of logs in the queued list though. Sorry, be patient and it will be there one of these days.

I've come up with a working flow. I set status on the caches as I go, and then when I'm happy with them and have time, I post a log that carries over the text from the set status.

Yes, that's one of the uses of Set Status to mark the found status with a note that will later automatically populate fields when Posting a Log.