2007 is actually not that outdated for a lake survey. The numbers dont look bad for walleyes and crappies. I actually grew up out in that area kind of (Dawson), and went to college in Marshall, but never fished Wood Lake. If you are just after Walleyes, head to Cottonwood, not too far from Wood Lake. They are both shallow, but aerated in the winter.
A bad day of fishing is better than a good day of work.