interesting idea, but I don't know that a carboy would lend itself well to this
project. you might be better off trying it on a smaller container with a wider mouth. alternately, if you're really attached to the 5-gallon volume, you could use a stoneware crock. much easier to adjust things and clean it out at the end of the project.
I've actually tried some whole-hive mead that a friend made. I can't say it was particularly appealing, but there's no accounting for taste.