Here’s a vid I found off of a link in a discussion on the SSMB Tech page about singlefins. It is from the blog “The Swallowtail Society”. It’s a video of a guy who followed the old “Lemons into Lemonade credo and came up with rather fantastic results! Check it out!
Next time you think that old board is dead, think twice! Reduce! Reuse! Recycle! :)