I don't do a lot of soaring but I did find a fabulous glider last night that has a very cool winch launch.
It's a Grob twin, available at http://www.fszwever.com/.
It works fine in FS9, but requires FSUIPC (registered or unregistered). Don't use the autoinstall, however, or it will overwrite the current FSUIPC with an older, incompatible version. You'll also need to include the SOARREC.dll in your old modules section of the fs9.cfg.
Try it. It's a hoot.