So sky captain that would mean
That, at cruise, if I could shift the cg back toward the tail, the tail would have to produce a net "upforce" to balance (trim) the a/c? With the tail doing that, it would have to create more lift, correct? More drag also, but, the net effect with a loaded tail is a reduction in the wing's angle of attack? Thought so. So to reduce net a/c drag I could ask the tail to help lift, and save Fuel? Thought so.
AF