The 7.5" to 8.5" Christenson will work amazing in your favourite mid length board. Or step it up to the 9" to 9.5" for your everyday log.
Performance Glass (PG) fins are machine cut from layers of solid fiberglass. These fins are stiff, and are widely used by pro level surfers because the integrity of the flex is maintained under immense force, and in the most extreme of conditions and situations.
The FCS II Tool-Less Longboard System