This is the original template for the CI twin fin dating back to the early 1980’s. It is a looser twin when compared to the Mark Richards style twin. This design, when hooked up with a small trailing center fin, makes a great loose feeling thruster. You will feel the speed of a twin-fin along with positive drive of a tri-fin. The foil on these fins is a one side (flat) classic twin fin foil.

Channel Islands finger fin.

Great alternative center fin for any application. Less area throughout while maintaining some depth.

This is the fin that hooks up with the channel islands twin fin to make the “twin finner”.