For me I try to stay in the knife position and use elevator for heading corrections. I also fly with about 2 clicks of down trim,,, My reason for that is when I release the back pressure on the stick, the plane will drift out to where I need to be vise having to go back thru the center detent of the stick.

As for the speed, I don t think it will matter,,, at the knife or at a few degrees from,,, as long as the plane is properly balanced.

Sooooooo, the less amount of stick movement,,, the less induced drag and the Faster you GO



BV