The Starboard SUPer has a real mast track and also a retractable dagger/center board.
I don't know what other Starboards have them but the Naish 12 and 14 Glides used to.. and the 11'6" and 11'4" and 10'6" still do.. I think.
Only the very first Naish 11'6" had a mast 'track'.. They just use a mast base hole now because I don't think people move the mast position forward and back anymore.
Here's a couple of vids of me windsurfing my 12 and 14' Glides.
DJ
