Try this link ...
http://robroy.dyndns.info/targetkites/Fa-330/intro.html
... and also do a general search on U-boat.net.
Several U-boats used them operationally and there is a bit at Kew about them. They were also tested in the Baltic by Komet, a disguised German surface raider, during a refit. One was aboard Komet when she attempted to break out into the Atlantic in October 1942, but you may recall from our conversations that she was caught and sunk before leaving the English Channel.
Regards, Bruce