The previous owner of my 40.5 modified the reefing system to a standard two line system from a single. He reported that in his opinion the single line had too much internal friction. Since he seemed thoughtful in everything else he did I will assume this modification is a good one. On my V32, I found the single line to be useful and simple, making it easy and quick to tuck in a reef. Of course, it was an entirely different rig and different spar mfg. It could be a pain unless you depowered the sail and it still took low gear on the winch to take it in. Question for 40.5 owners, what do you think of the single line system? Rick D.