Thanks Zeebe. Yes, you’re right: the site was originally laid out about five years ago so isn’t really up to date. I used blocks too, which I assume are very responsive unfriendly!
Nevertheless my guests tell me that they like my site and find it easy to navigate and easy to drill down to find the information they want. Also there are sections which are far wordier than I would normally think was good practice, but it’s there to answer questions and does serve a purpose.
So in this case making a special, very pared-down, mobile version makes sense. I’ve found a couple of themes which will work well, but before I spent hours creating a special site I wanted to check I’d understood!
Rovertek: I’ve downloaded the PDF and studied their website, but just wanted to be sure I’d understood. Happily it seems I have!