<|im_start|>user
Can kitesurfers sail up against the wind?<|im_end|>
<|im_start|>assistant
Yes, kitesurfers can sail up against the wind by edging their surfboard upwind at a slight angle relative to 90 degrees crosswind. Depending on the equipment and skill, kitesurfers can generally achieve an upwind angle of ~20 degrees.<|im_end|>
