Vicky - GM Founder said:During the primary ferment, until I reach the 1/3 sugar break, I try to drop in my drill-mounted stirrer and mix up the must at least once (and sometimes twice) a day. I did this for my last two batches, an orange blossom traditional (semi-sweet) and a meadowfoam traditional (also semi-sweet), and they zoomed through the primary ferment in less than a month, clean and with no off flavors.
So yeah, I'd say that stirring during the active fermentation can be *very* beneficial.....
I went ahead and ordered a stirrer, but it looks like my wine store doesn't have them in stock so it's going to be mail order! I also ordered Fermaid K, and gotferm. Sadly it won't help this batch much. So now back to the old fashioned stirring.