Skill Focus: Fly effectively does that, almost (though it's a +3 bonus rather than +4). If you invest heavily in the Fly skill it even surpasses the boost you would get from increased maneuverability (+6 instead of +4).
I can see that the maneuver class gives bonuses or penalties to the Fly skill, but perfect maneuverability allows one to fly upward at full speed instead of half. I don't see any provision for that in the Fly skill.
I can see that the maneuver class gives bonuses or penalties to the Fly skill, but perfect maneuverability allows one to fly upward at full speed instead of half. I don't see any provision for that in the Fly skill.