And I might add that as a general rule, hoist the chute and grasp the luff with your fist. You should be able to turn your fist from verticle to horizontal (90 degees) where the luff is too tight to allow you to turn your hand any further. A tighter luff allows you to sail deeper downwind (by helping to rotate the spinnaker around into the wind) - a softer luff lets the sail fall away from the wind which means you have to sail higher angles.