Hi sjh,
Was waiting for you two to post a trip report, but then not seeing your report, thought that I should reply to this thread. Because of the changing weather conditions on Sunday the 15th, my surveying altimeter was less stable than it was in summer 2005. But, nevertheless, I was still measuring the new summit at about 10-15 ft higher than the old.
I spent about 12 minutes averaging readings on the old summit just after you headed down, then needed about 12 minutes to arrive at the new summit, spent another 12 minutes averaging readings there, then needed about 10 minutes to return to the old summit, and closed the loop by averaging readings for another 12 minutes there. So, about an hour-long project this time, rather than the 15-20 minutes that Weedhopper and I spent making measurements in 2005; although we did not close our loop then, I think that the more stable weather conditions made up for that.
I caught Steve Smith at the shop just as he was closing, and he said that you guys had stopped in a few minutes earlier. Steve hiked Owls Head on October 10th, and told me that this past summer Larry Garland had resurveyed the ridge with a Trimble GPS (similar to the systems with the large antenna sticking out of a backpack that you see used by highway crews), which allows post-processing of data against a base station, etc., and found the new summit to be between 5 and 10 ft higher than the old summit.
So, until someone drags a theodolite and rod up there (Ed Hawkins?), I guess all we can say is that the new summit is somewhere between 5 and 20 ft higher than the old.
Good seeing on OH last Sunday, and good luck completing your 48 in the next couple of weeks.