When roller reefing used to be more common - funny how things have come full circle, isn''t it!? - it was normal to find a Boom Claw on a boat''s boom. This is an almost-complete ring, usually cast of aluminum, that was open at the top perhaps 2" (allowing the hoist of the sail). The two ends of the Claw, one on each side of the sail, had plastic rollers. As one rolled in a reef, the boom would rotate inside the Claw. The base of the Claw could therefore be attached wherever you found it suitable, usually to the base of the mast but also taken to the side deck when needed. The Claw always remained on the boom, even when the sail was furled.
You might find it quite easy to locate a Boom Claw in one of the consignment or used boat gear shops in the U.S. but I don''t know if you have easy access to them. Perhaps a friend in the States can seek one out for you? (Sailorman in Ft. Lauderdale, FL, Bacon''s in Annapolis, MD, Minney''s in Newport Beach(?), CA are all examples).
Good luck with the new boat!