In my experience, the second rut is more subdued than the first rut, BUT!, if you happen to be in the vicinity of a doe in heat it can be awesome! For instance, in '07 I killed a buck onDec. 15th. I was still hunting on the edge of an awesome bedding area and arrowed a beautiful buck that was chasing a doe. If it weren't for this rutting activity, him trying to corral her into the corner of the bedding area, I never would have gotten a chance at him. She actually wanted to leave the area but he kept pushing her back into this corner, which is where I happened to be standing in chest waders in the river, waiting.
If you keep track of the first rut timing, then prepare to hunt 28 days after the peak of the first rut, you could be in for some great hunting comeDecember. Just like the first rut, hunt where the does are, but maybe spend some time around bedding areas since the hunting pressure has driven some of the bigger bucks into thicker areas until dark.