I think the cut of the headsail's clew would determine the type of reefing solution. On a "deck sweeper" racing cut 150 you would need tack and clew cringles with an extra set of sheets and perhaps some reef tie points, because there will be surplus sail the full length of the foot. On a higher clewed cruising type headsail, where the clew and foot rise dramatically above the deck and lifelines for visibility, I suspect all that is needed is a tack reef point, and adjustable lead blocks. A reefing line run through the reef tack point and a deck block then back to the cockpit would sufficiently shorten the luff, and also realign the foot to a more parrallel relationship with the deck. No need to change sheets or have a clew reef point. The surplus is mostly at the front of the sail and remains hanked-on. So the end effect is: For those that prefer hank-on sails, (and there are many) reducing sail size by 15-20 percent does not require a trip forward. Does that make sense?