You singe the hairs are part of the processing. You don't have to get very close. You want to singe the hairs, not the skin. Don't aim the point of the flame directly at the chicken. Approach more or less parallel to the skin so you are singeing a broader area and not directing the hot pinpoint of the flame at a few hairs. The radiant heat from the side of the flame will be enough to singe the hairs off. Take short little passes and as the hairs singe, pull back. Kind of an in and out sweeping motion like you are touching up something with a light dusting of spray paint--just to get the hairs but not leave the flame in place long enough to scorch the skin.
UGCM