They say it helps reduce the friction between the base and snow. These dimples are elongated, not circular like a golf ball, and arranged lengthwise. Think along the lines of a skinny football shape.
15 NS Ripsaw . 14 NS Proto HD . 14 NS Cobra . 13 Gnu Space Case EC2 . 2013 Salomon Pow Snake
14 Now Drive . 13 Now IPO
14 Flow Hylite