I just did Sixish last week and rapped down, with no problem whatsoever. It did involve walking perhaps a few hundred feet. Is it ok for the descent to be a slight puzzle, or does every route have to be provided with a sling at the top to start back down with?
That's just what I did from the top of Sixish last week: Walked a couple of hundred feet and rappeled down. Note that in my response to the earlier post about Sixish, I did not say how exactly how I did it. So I helped preserve the "slight puzzle". But there are consequences to leaving that puzzle ... one is that some people will "solve" it with less ingenuity -- and so crowd the belay ledge at P1.