Yes, the top batten parallel to the boom is a basic well known starting point for windward work. The several lower battens will be more closed
. Their aft ends actually pointing a bit to windward. I think we are saying the same thing, but you have confused the words. Trimming the other way is surely impossible, no?
The apparent wind normally twists, lifts, with height. This tends to cause the sail to be trimmed with some twist as well. But it all depends on what you need to do to "get the job done."
OP: True wind is useless in sail trim. It is useful in weather
reports and course planning.