re: Sheet to Tiller or Windvane?
It may be possible to simply lash the rudder with line and bungee upwind, though i havent had much luck with it on my boat. Havent really commited to it either though... Have u tried the storm jib to tiller self steering? There are YouTube videos online about that.
I myself really need an autopilot for single handing, but a wind vane would be kind of useless for the mostly days ailing I do, esp in lighter winds or downwind when I need it most but the apparent wind drops. A lot of people use electric systems, ESP when they are not regularly crossing oceans. U can pick one up for under $500 and they work fairly well. Any reason not to consider it? I mean u could buy seven of them by the time u pay for a wind vane...