I'm thinking about buying a used main for my Capri 22. Probably will come from Bacon's, since I'm close to Annapolis. I did a search here, and people recommended them. Plus, I stopped in to see them in person, and got a pretty good vibe from the folks there. Nice, low-pressure environment.I am replacing a main with slugs webbed to the sail. Some of the more likely candidates in their database were a rope luff; I'd be installing the hardware myself after purchase. So here's the question: when I hoist the sail to see if it fits, how will I know it fits if I can't really "attach" it to the mast? I have an adjustable backstay to put some curve in the mast, and I'm likely going to wind up with a main from a J boat, which will have a fairly good curve built in to it as well.Should I try to feed the rope luff into my mast track when test-fitting? Will that even be possible? Even a used sail is a major investment for me, so I'm trying to get this right.