WTF, dry hopping? Do they know what that means? How would you use a stir plate to dry hop?
I'm guessing the point is to keep the hops in suspension to get more contact time with the beer. Other than that I'm lost. Certainly doesn;t seem necessary.
Tom,what size magnet are you using on your stir plate to stir a carboy? You ever try it at 5 gallons?