Track
I have a loose footed main on my 1988 TRBS Cat 30. It was installed by previous owner. A short track, maybe 3 feet, was installed on the boom, just forward of the sheave at the end of the boom. The bitter end of the outhaul is attached to the car runs up through a small block attached to the clew, back down a block on the car and back over the sheave and through the boom, then leasd back to the cockpit. The car is left free to run forward and aft. As sail is unfurled, it is pulled to the carfirst then car and clew are drawn back aft until sail is fully set. Very easy to furl, unfurl or reef (sail furls behind the mast). Can be reefed under load with the small windch on the cabin top, but typically I head up slightly. Works well and mimics the system I have seen on much larger boats.