very interesting!....sure to cause a whole lot of bellyaching by the 'purists'. could be hugely useful with the right application, or obnoxious if not utilized tactfully. looks appealing to someone like me who has never done too well with surfing, but really if you cant paddle into it, should you (I) even be there? looks great for retired surfers, lol. and the rescue board application. I would like to try one for SUP at an out of the way break, to avoid other people.
whitewater would be a whole other can o' worms...