Tobias,
You are right on the concept. They seem tough to come by, but The Surfcaster does have them listed in the 2000 catalog. It doesn't appear that anyone has a mold to make the or at least they won't give them up. I have never fished them, so I don't even know where to get skins.
Good luck wiht your quest <img src="/Images/Happy_Face.gif"><!--e1-->
Fishpart