A lot of boats (mostly larger) have a "turning" block mounted at the aft end of the track so the lead to the winch is always the same no mater what the position of the jib car. If you are flying a storm jib or a 170 "drifter". On some , you will find a "double" turning block (2 sheaves) to facilitate sail changes.
On older, larger race boats you will find 3 or more sets of tracks (per side), all with their own cars leading to multiple turning blocks. On some of those boats, before the development of rope clutches, you would also find that every line, sheet, halyard and control line had it's own winch, so don't feel too bad about having to buy just a pair ;>) When I get around to my deck "re-fit" I plan on utilizing the salvaged winches I have laying around and go with an "old school" layout as mentioned above, kind of a nod and wink at my sailing "roots" Mark, Gratis (6115) NOLA
