I found this blog as a link off PBO reader to reader . It has extensive articles in the side menu. Like Andrew’s blog he covers lots of stuff in interesting details.
The section halfway down the page on anchoring and signals vs shouting caught my interest and may be useful to all. Check the rest of the blog if you have time. I’m about a third of the way through. There is an interesting discussion on desiccating toilets . Never realised such a thing was an option on a boat.
In regards to anchoring and yelling, it’s always a background noise in caravan parks as people reverse vans/trailers/ motorhomes and scream dubious directions


Anyway, if you find a good sailing blog, post a link.