I use an AO on all of my 6.6-11.0 m2 racing sails with XL slalom and L speed boards. When going upwind (= better upwind angle) or when wind is getting stronger, tighten the AO to flatten the sail and dissipate the excess of sail power. When going downwind or when wind is getting lighter, loosen the AO to tune the sail with a deeper draft and get more sail power.
With camless sails and especially in waves, I don't use an on-the-fly adujustable outhaul because for obvious safety reasons, it can get loose - or worst scenario, completely lost- at the sail's or boom's clew.
Cheers !
JM
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