Hi salt,
We had three WAM 2011 owners who were trading up their boards for the new 2012 models coz they love shiny new stuff

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We traded in 2 x 6' WAM's and a 5'8" WAM. I had a buyer who waited for over a month to get the 5'8" when it finally came in. He was very happy.
The other two 6' WAM's came in at the same time. One sold within 60 minutes of it returning to the shop, the other sold two days later.

These type of boards sell before they get anywhere near the Buy and Sell. They were a very popular board in 2011 and were, and still are, in high demand. I don't know of anyone actually breaking one, although North actually warranted repairs to one with heel dents (try getting that through your local surf shop)

Unless you know of someone with a 2011 5'8" that you can convince to trade up, you're not likely to find one second hand. I'd start saving a little harder for a 2012. Most good North sellers will have stock in all sizes already.
DM