Thanks, Ron W., for the great information and Sport Aviation article reference. It's an amazing story. Paul had me put a different airfoil on the Cougar when I worked for him in the mid-80s. I'm not sure what happened to any of those drawings. It's interesting that only one was a tricycle gear airplane (a sign of the times). The Turner T-40 has always caught my eye. The Lacey M-10 looks like it is simple and fast. A new airfoil (and larger wing) could probably do it wonders. Thanks again. Great article.