Downhauling takes 50percent of unpleasant things in windsurfing. The next are: wet wetsuit, board tying to a car roof, searching for a shadow to put sail after sailing, carying formula board to shore thru surfbreak.
North XT mast base eliminated downhauling from that list. It completely changed downhauling. No back pains, you can downhaul sail on the water, absolute precision, no ropes driving thru the holes on sail pulley, or base.