I've seen shake develope as time goes on, if you have Felling shake, you'll see that right away, but, I would ask why you feel this is something you need to be worried about?

Have you seen Ring Shake in any of your logs so far? and, any more than just on the exposed ends?

I've been working timbers since late '88 and I've never really had problems with Shake in Oak, Hemlock is the species which seems far more prone to Ring Shake.

I'm just wondering why this is something you feel you need to be concerned with.