After looking into it, rather than comments for each post, I saw the simple thing was to provide a secure contact form for anyone who visits my site. Hosting a comment forum without an additional admin person is impossible for me at this time. I simply cannot monitor my site that frequently. But answering receiving and replying to emails is something I can do and always do routinely.
So I will making a comment page.
I have not figured out the best way to do that right now, however. But probably in twenty-four hours this will be resolved.