I'm in the planning stages of an unguided solo trip to SA next winter to Climb Aconcagua and figured I'd throw it out there to see if anyone else was heading there to do the same. My thinking is (2) solo climbers could keep each other company, keep an eye on one another, and maybe split some costs here or there (mules, hostel, things like that).
Shoot me a pm for more details or if you are interested.
Thanks,
Travis