You asked for it...
For starters, Keep the pole perpendicular to the breeze.
Ease the sheet until the luff curls/breaks, if it breaks high move the pole up, if it breaks low, move the pole down.
For best speed the sheet should be constantly trimmed/eased to just hold a curl at the luff.
Pole tip height, try to keep the clews even.
Merit 25 # 764 "Audrey"