I know from talking to a previous owner (prior to the guy I bought it from) that my boat was not used at least 4 years of its life, so the sail does not have a full 13 years of use. I've hand-washed this sail twice before, and know I could make it look perfectly clean by myself. I believe it has a decent amount of life left in it. The draft is in about the right place, for cruising it appears to drive the boat OK. The stitches have no apparent UV degradation, the batten pockets are in great shape (though I prefer not to have them stitched shut
I had heard good things about Sailcare, and was interested in their process to re-resin the sail, which is included in the cleaning treatment. I realize that it will not restore the original shape of a new sail, but re-resining it will strengthen it enough to prevent small tears from getting larger. That's what I still plan to do.
I saw what a badly worn sail looks like when I retired my genoa, which had severe UV degradation. The mainsail is nothing like that.
I'm going to have this done, the only question is whether to spring the $88 for stitching the numbers and logos. I talked to the guy about it today, and he says that the cleaning solvents can soften the adhesive and cause the numbers and logo to de-adhere. I told him I'll think about it overnight and will call him tomorrow.