I see you go back to the days of the Ozark Tail Nail, which, by the way was invented not too far from here. Too busy working and catching minners to build a paddle
www.google.com/patents/about?id=aWhRAAAAEBAJ
Here is an interesting link to the Tail Nail. Once you get to the site, you can donload the pdf on the patent.
Oops this is the one on the Ozark Tail Nail, but both would work. http://www.google.com/patents?id=scY...page&q&f=false