Recommendations for outdoor storage shed

I have a small resin shed at our beach place, maybe 3 x 5. It sits about 1200 feet from the Atlantic ocean. It have 2 of the long dog tie out anchors screwed in the ground, one on each side in the mid point of the shed. I have a half inch rope tied across the top, not cinched down enough to bend the top, but enough to hold it still in the wind. It has survived 3 or 4 hurricanes in the last 10 years, and has remained unscathed so far. Now that I’ve bragged on it, it may leave without a trace the next hurricane! LOL