We have the Edson leather spreader boots and they are great! Nice and soft so if the sail rubs against them chafe is minimized. We had the opportunity to install ours when we stepped our mast to get through the Champlain Canal system. They take a little time (and sometimes a couple of tries) to get them stitched up evenly, but I guess the only way to install them with the mast up is to haul yourself up in the bosuns chair.
I also installed Edson spreader boots last time my mast was down. The kit comes with a heavy needle and twine and didn't take that long at all to stitch. They are holding up well after five years!