OMG- Honey, I shrunk the Doug

You still have that under your house ,don't you!
They were briefly one of the quickest boards at the time,styerene core and ASA,stiff and flat.That was the beginning of the end for polyethelene boards.
The 200SL was the same board(although newer) but with a daggerboard , heavier and a therefore step backwards, back to a schlogger boards.