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Not an expert on the area at all, but sand seems like a dumb idea. Here in hull it took all but two storms to wash away the sand they piled up to the edge of the wall, all that's left is the exposed rocks they put in. I think possibly a better idea, maybe build an artificial breaker reef of the coast. Over time it would form into a more natural reef and would be far more beneficial to the local wild life and would eventually become a permanent first line of defense against erosive waves. I think that would give people far more bang for their buck. Of course from seeing pictures of that cliff, i would assume the ocean is far from their only problem. Wind and rain run off must easily cause almost as much damage as the waves.. So once again natural solution.. Try planting some shrubs on there (it would require lots of effort to get them to take hold i'm sure) and in conjunction with the breaker reef and some minor buffing up of the sand, could just work. It would be more expensive, but at least its not an expensive TEMPORARY solution. And it has it's upsides for the local wildlife.
I dunno just a thought. But lots of sand? Come on. It washes away so quickly. With in 3-4years it would just form a giant sand flat if waves are that big of a problem. .
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