I once SUP'd around 7mi island. As in launch from the bay, out the inlet and down the beach. I passed not far outside the breakers and got a real kick as every set of lifeguards did not know what to do. Not sure how close is too close but most didnt look happy. Only run in was when I caught a small wave at the surfing beach and then kept going. 2 guards chased me in the row boat but I just kept paddling. Luckily they just let me go.