A structured method (rather than the hunt and pounce method I used) is a good idea. I don’t know how to impliment it, but it’s a good idea.

The tag is useful as it can show the full extent of park registered as POTA entities. The map application on the POTA website show only points, which can be misleading for large or extended entities.

The website https://potamap.ea7klk.es/ is a good example of using the tag to show full parks.