Toe in. Surfboards have always had plenty of it, the fins generally pointing at the nose or just past it.
WHY TOE IN?
Even in a straight line the flow under the board is not parallel, but tries to squirt out the sides.
Measuring your boards front box 'toe in' is actually fairly easy. The best way is to measure to the 'edge of the fin heads' as shown in the pictures below, this removes any imperfections in the box shape.
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Click on the pics and...