According to my research paddle boards have been around for longer than I imagined. However, they didn't become widespread, as far as I know, until twenty or so years ago, and in terms of me noticing them, about five years ago. Now I see them in all seasons apart from winter on the River Wye in Herefordshire, and when I go to any recreational river or seaside they are usually present. I've never tried one, but to me they seem to have few advantages over canoes apart from lower cost and easier transport. On our recent visit to the south coast they were everywhere including the cove at Beer, Devon.
photo © T. Boughen Camera: Lumix FZ1000 2