IN BOOM MAIN SAIL FURLING
I put a Profurl boom on my Island Packet 31 and later (at wife''s insistence) added an electric winch in cockpit. System works great and we love it.
New Sabre 402 (now being commissioned) will have a Leisure Furl with electric winch. I think it is a better designed system and is now also made in US.
I second others'' comments about reefing advantages, sail shape (got an additional 1/2 knot on my IP), and importance of keeping tension on halyard and proper boom angle when furling.