We have just been through this exercise while getting a new
mainsail made. We installed the Tides
Marine system and it is fantastic. The system is designed to fit your
mast slot and once ordered it took just 7 days to be individually made to suit our
mast and delivered from the US to
Australia.
It was a breeze to install and took all of 5 mins. Now we have a new main sail which is a dream to raise and reef down
wind. Of course ours is only a few weeks old but we have friends who installed this system before they left the US 8 years ago and have just completed their
circumnavigation and still praise the system.
It is also a lot less expensive than other systems.
Cheers Sapient Sue