You really do need to protect sail cloth from UV. Sails are expensive, and don't last very long in the sun. They get brittle and fall apart, and your wallet gets much flatter.
There is another solution than having a sacrificial strip sewn onto the sail, though. This is to have a sail cover made for the rolled up jib, on its furler, and to put the sail cover on the jib when the jib is not being used. The cover can be made of Sunbrella, and only has to be a rectangle, long enough to extend from the furling drum to the swivel, and wide enough to go around the furled jib (or genoa). It can fasten around the jib with a very long zipper or with Murphy (twist) fasteners. A zipper is neater, but more expensive.
In the way of additional hardware you need a small block and an eyestrap to fasten it to the mast about six or eight inches below the jib halliard fitting, and a small horn cleat on the forward side of the mast at a convenient height above the deck (four or five feet). The jib cover halliard is a piece of 1/8 or 3/32nd line long enough to go from the cleat up to the small block and down to about four feet above the deck along the furled jib.
To put the cover on the jib after the jib has been rolled up on the furler, put the upper end of the jib cover around the furled jib above the clue of the jib, where the jib sheets attach, and start the zipper. Tie the halliard to the jib cover through a pair of grommets (that need to be on either side of the end of the zipper) and haul on the halliard. Then zip the cover together on the jib, and pull on the halliard again. When the cover is all the way up over the rolled up jib to the swivel (or to the top of the plastic extrusion) the bottom of the cover will reach to the furling drum. Then make the line fast to the little cleat on the front of the mast.
Probably the neatest way to arrange the zipper is to have the first zipper end just above the jib sheets and to have another zipper that starts from the bottom of the cover, zipping to justd below the jib sheets. That way you don't have to remove the jib sheets to zip the cover over the complete length of the rolled up jib.
If you decide to use twist fasteners instead of a zipper, there's no problem at all about leaving the jib sheets attached to the jib and reeved through their blocks.
When you are taking the cover off the jib, uncleat the cover halliard and pull down on the cover, unzipping the zipper as you do so. When you come to the end of the halliard tied to the jib cover, untie it and make both ends of the halliard fast to the cleat.
I have had a zip-on cover of this description on the jib of a 23 foot fractionally rigged boat that I have (in addition to my P-14) for fourteen years, and I have had no trouble with it. Mine was made with a full length zipper and a bit narrow, so I must remove the jib sheets when I put the cover on. On the other hand, my jib sheets are always clean and soft.
I don't know how large a boat must be before this sort of cover won't work, but a friend has a Compac 23 with a masthead jib with a cover of this type, and it works fine. He uses twist fasteners and I think that they are rather far apart, but it seems to work fine. Another friend uses a jib cover of this design on a Southcoast 22 with a CDI furler and twist fasteners and has had no trouble for four years (since he got the furler).
Another friend yet went to a sailmaker to have a cover made like the one on my boat, with the big long zipper. He came back and told me that the sailmaker said that it could not be done, that zippers were not made that long. I told him to either go back and tell the sailmaker to look again, or to find another sailmaker. Whatever he did, he came up with a zipper cover for his furling jib, and did not have to pay a sailmaker to sew another sacrificial piece onto the jib every couple of years.
Regards
Tom Grimes
P-14 #363 Far Horizon
Rob Roy 23 #32 Faraway Quest
Muncie, Indiana