You should listen to Bryan, he's been deigning and flying pattern planes for almost as long as I can remember and knows what he's talking about. I started in pattern back in 1990, and he was sort-of an outcast because everyone thought 0-0 was the way to go and he's flown positive incidence for as long as I've known him. Of course, his trimming techniques are much more refined now than they were back then, but he's been doing it forever.