not to be to technical but:
Deep Downwind like Erik told is a lower apparent wind and you can go with deep profile. Upwind (go back after downwind) is a higher apparent wind and less twist in apparent wind direction. Therefore upwind a deep profile is contra productive and will force you to open very much your boom/sail and go slowly and less angel. You will win with outhaul for all circumstances. But it is also true that the Reflex System will lock the force in a wide outhaul range but don't over-stress it.