I remember skurfing when it first came out in mid to late 80's maybe early 90's?
I also remember just previous to the Skurfer, some people were selling knee boards, that the padding was removeable, and these little fins dropped out of the bottom of it. Then you could kinda surf on it? I think that was even before the skurfer? Not sure if it's what your looking for or not.
Incidentally, anyone know where the skurfer originated from?