The OP1 is a high performance groveler for waist to head high surf. The plan shape is wide with fuller rails and lower rocker to allow the board to paddle well, and plane in softer surf. The bottom contour is a single to double concave with vee thru the back of the tail to allow for quick direction changes and tighter turn radius while maintaining its drive thru the turn.
The recommended length is 2-4 shorter than your height.