After using this skeg last night, it was a lot less noisy when deployed. It
: also seemed to have less drag, but that is what I was expecting, so this
: is a pretty subjective measurement. I know with the old skeg, when I was
: cruising and dropped it quickly, I felt like I hit the
: brakes...quantitative tests say you gain up to 10% more drag with a skeg
: deployed. The new one "feels" like less than 5.

Due to the increased thickness of the new skeg, I would actually expect the new one to have a little more drag when going straight. But if the water attacks the blade at an angle, the foil shape should be more efficient. Since a skeg is used when the boat is being pushed off course, I expect the new skeg should be more efficient most of the time.