In 1989, we introduced the patented LD (low drag) Buoy. Retrieving a 700-lb. crab pot in 30-ft. seas is the most dangerous job in the world. We tried to make this job a little safer by creating a buoy with less surface drag for faster, safer pick ups as well as easing strain on both crew and gear. Like all good products, it didn%u2019t take long before other fishermen saw the value of the LD. Polyform%u2019s LD Series is the undisputed world leader in low drag buoys, outselling all others combined.