Adjusting Splay / Cant

Fin Splay refers to the angle the fins are placed relative to the underside of the surfboard, or the number of degrees the fin tip is offset from the fin base. Fins splayed outwards would result in the fin tip being more towards the rail of the board compared to the fin base.

The side fins should always be splayed at the same number of degrees, whereas the centre fin must remain at 90 degrees - no splay.

Increasing the outler splay of the side fins (i.e. the tips are leaning more towards the rail of the board) will

increase the boards responsiveness during turns.

When to decrease outwards splay:

Decreasing the number of degrees the side fins are splayed from the rail (i.e. more towards the centre stringer of the board) will increase the boards speed particularly when driving down the line.