They do quite a bit of it near where I live, mostly off the Sanibel Causeway, in SW Florida. The US hotspot is near the mouth of the Columbia River gorge near Portland Oregon. A great international spot is Cabarete Beach on the north coast of the Dominican Republic, less than an hours drive from POP international airport Puerto Plata, DR. Some sections of 7mile beach are open enough although I'e never seen anyone doing it there. Most of the beach is roped in swimming areas in front of the various resorts, also not a great sport around swimmers.