Feel free to put this in your documentary, although there is no scientific data to back this claim up, I firmly believe this contributed to the erosion.

http://www.ebay.com/itm/Negril-Long-...IAAOSw5ZBWIorP

Also when I get home- there is always sand in my suitcase- stuck to my snorkling gear, flops, etc. You multiply that small amount by all the millions of visitors... and its surprising there is still an island.