Invented in Hawaii in the 1940s, stand-up paddle boarding has become especially popular in the last decade, partly because unlike surfing it can be practiced by a broad range of people of all ages and fitness levels.
But while most people associate this activity with placid seas and lakes, an increasing number are using them to surf - albeit relatively mild surf, no more than one to two feet high.
Most paddle boards are made of fiberglass and are ten to 12 feet long, but there are ot
