I have one, but it is just a little piece of **** and I don't know if it works. It hasn't been turned on in probably five years. And I don't have any pictures of it.
i wish i had one.
i often sail a few of the global challenge yachts, which are 72ft long. and they are diesigned to sail around the 'wrong way' you need i think a minimum of 10 people to sail one of these, but optimum is about 17.
thats what they look like, and a few times i've nearly fallen off whilst taking and getting ready to pull in the mainsheet.
[MEDIA]http://www.youtube.com/watch?v=zXuzy0k9mZQ[/MEDIA]
thats what the yachts do, and boy is it fun