Tunnel fin for the 12'9" Makaha

The Makaha woody has a 10 inch deep singlefin with a 5 inch diameter tunnel fin tucked under a cutaway in the main fin. Here we have the tunnel fin laminated and partly foiled, it is made of 73 narrow strips laminated together in two layers over a cylindrical mould, with a layer of cloth in between. The resin/cloth layer is harder than the wood and is there to provide a hard layer so that the trailing edge can be finely foiled.Here is the fin setup, in reality the main fin will be set down two more inches into the board. It's an incredibly good fin setup which we have been using for the past 5 years, no other fin arrangement that I have tried has anything like the drive, speed and control that this one has. It is powerful and free running, just the cat's whiskers !