Here's an update on my melomel.
2-17-2013 Made mash of 14 pounds of honey, 10 pounds of blueberries, and 2.5 gallons of water in a primary bucket.
2-18-2013 Pitched yeast. Measured OG at 1.120 (but I'm now suspicious that it might not have been mixed well, so that might be low).
2-28-2013 Punched down and stirred to degas every day so far, but realized on this day that I was not being aggressive enough stirring with my spoon, and there was still a lot of gas. I now understand why people use the lees stirrer with a drill.
3-02-2013 SG down to 1.015. Put 1 pound of honey in 5-gallon carboy, skimmed most of the blueberries out of the bucket, and then racked melomel into carboy (swirled it a bit to mix the honey). I had about 3.5 gallons of liquid in the carboy. Filled up the rest of the volume with a mixture of water and Everclear with a ratio of 6 to 1 to make a 14% alcohol liquid. Mixed with my racking cane and retested SG at 1.014. Tested sample, and it was slightly fruity (but not specifically blueberry) followed by a wine flavor. Warm in my stomach. Not particularly appetizing.
4-06-2013 SG down to 1.000. Sample tasted very dry, hot alcohol with a very slight fruit flavor. More like fruit skin rather than juice. Still not pleasing. Added one pound of honey to my primary bucket. Racked the melomel to the bucket and stirred with my spoon to mix the honey. SG tested as 1.009. Cleaned and sanitized carboy. Racked back to carboy.
I don't see any activity in the carboy yet. I'll check it the next couple of days to see if it starts again, but I estimate that this melomel is already at about 16% alcohol, so I would imagine that it could crap out at any time.
I'm disappointed with the lack of blueberry flavor. I think I'm going to follow what flyweed and Opus recommend and add some blueberry flavoring to it.