I would throw more hash than I currently am if the diff didn't change so fast.  I found by reducing my hash from around 5-6 th down to 2 th, I get almost as many coins because diff stays lower.  Sure price goes down by reducing my hashrate, but it's all relative if I just want WKC .  Might as well save the electricity.  My advice to the 6th guy is to back your hash off a bit and you'll still get nearly the same amount of coins when diff drops off.