There is group of them in the NE. The Virginia Beach fleet sponsored the Shark Nationals for several years up until this past year and ran it with their Sail the Bay event. They would have about 6-10 show up each year.

They were fun to watch and did great when the wind picked up. I really had a lot more respect for them when I saw how they preformed in 25+ and lots of chop. The conditions got so bad 2 years ago that I bailed out of a couple of races on my H16 since I had my 10 year old daughter crewing with me. The Sharks stayed out there were pretty solid. I was amazed how fast they were.