Let's just say that towing with my J3 Cub and Alex with his S2 at the SKSS event sold a few more motors for Great Planes. Guys were stunned by the performace at that price point. Certainly the motor could be more efficient, but when Tower and others have their sales, they are very reasonable and can't be expected to be of Neu or Hacker specs.
The "new" motor in my Cub was a champ. I did about 16 tows with it last weekend with zero issues -- I spend most of the time towing heavies with the Pegasus.
I still think -- that if prop clearance is available -- a 10S setup turning something like a 24x10 or 24x12 might be the ticket versus 12S on 22x8.
Alex, what say ye?