Here’s an interesting study on decoction.
https://docs.google.com/file/d/0B29juef ... view?pli=1
As I’ve said before, “Friar Tuck is right.” Short answer, up the melanoidin malt a bit if you want more melanoidin taste.
We brewed two Weizenbocks back in October on the 1/2bbl system. The only reason I mention that is because the decoction we did on the first batch was a huge pain. On the second batch, we did not do one and used WL Hefe IV as opposed to Hefe I (which I believe is Weihenstephaners).
The malt character on the second (identical grain bill) was far more pronounced, in my opinion because of the yeast selection. We fermented both in low 60’s. Great, restrained phenolics and a complex malt profile on both, but the Hefe IV was just a bit maltier, which I liked.
Both beers are excellent though. This is an awesome style, and your recipe looks good. Love Midnight Wheat.
One thing I might recommend as opposed to pitching two vials (which may or may not be enough) would be to pitch those two vials into a brewday starter on a stir plate if available, to get them active. Just get your starter going 6-12 hours before pitching. I do this with saisons often to get some more yeast character out of them, without heavy esters or the dreaded fusels.