most racers would be using a spinnaker in a run and would sail the best angle for their boat. that would be an angle that keeps the sails full at all times. most of the time racers do not sail dead down wind. the angles are more like 120 degrees to the wind and jibing several times on the way to the lee mark. with no spinnaker they might be sailing wing and wing and may use a wisker pole.
Of course makes total sense.
We do have some non-spin classes around here but I suspect you are right in that they would head up to keep boat speed.