Hi Brian/Shadowfax,
For young & tannic wines (some bruiser California/Washington Cabernets and/or big Australian reds, etc) I often double decant in the morning by simply pouring the wine into a glass pitcher and then with a funnel pouring the wine back into the bottle, re-corking and letting it sit for 8-12 hours so it is ready to drink in the evening. On occasion, I use a Vinturi aerator. I find I enjoy many wines more by doing this.
You may want to experiment because many wines taste different with aeration. Some taste better and some wines are not as good, in my opinion. I rarely aerate/decant white wine or older Bordeaux (15+ years). As an example, we just popped & poured a 2005 Calon Segur (Bordeaux red) that we enjoyed the first night. There was one glass left that we saved for the second night... my wife's and my impression was that it tasted better the second night (so it probably would have been even better if we aerated/decanted when we opened it).
... I guess this is a long way of saying that you need to experiment and find out what you like best.