This reverse -"D" template box fin is for my 9'-6", Donald Takayama Model-T . It will be glassed with 3 layers of 6oz each side and have a 1/2" clear bead. The base will be laid up by hand using alternating layers of heavy skate deck cloth and 8oz volan, then hand fitted to the box.
Personally, I much prefer this fin over a pivot fin. Although it is slightly less in height than the 9-5 pivot fin, the leading edge has approximately the same degree of rake and the depth is plenty to anchor the tail while nose-riding and bottom turning. The trade-off advantage is that the soft radius of the trailing edge is incredibly smooth and loose to turn and can be turned form a more forward position on the board. For me, it provides better all-around performance from an already incredible board.
I almost always have ridden boards that I shaped for myself. In the 70's I always had a Takayama LB in my quiver. I had been reminiscing and eying the Model-T's for quite a while recently. Today's Model-T is not much different than what Donald was already shaping in the 70's. When I saw one at Mitch's North that I liked, I bought it.
After the first wave I took off on I remembered exactly why I loved them so much.
I think I will hang on to this one!