... for those considering lazy jacks or the Mack Pack for mainsail handling, you may want to seriously consider a mainsail track system of any type. Take a look at Ronstan, Tides Marine's Strong Track, Antal, Frederiksen and Harken. For the Main Furling systems, check out Forespar's Leisurefurl, Schaefer's Furling Boom and Selden's behind the Main Furler.

I hope that tossing those names out may help you find some stuff on the internet. If you want more specific information just give me a shout...