Wow! This thing is wild! We finally got back out there and got to the base of it with enough time. Somehow I talked my friend Nathan into leading it as I figured he would get more out of the experience then I would. He found it to be a little tough and pretty intimidating. At about the 2/3 point he was standing on a rock ledge that blew out on him, the nail that caught him was not so solid he said. Seemed he thought he could pull it out with his fingers! Also, you might want to be good at high stepping as it seemed alot of nails were out of reach for him. He ended up lassoing most of them from lower in his ladders.
I'm going to have to come back and lead it cause it's wicked!
So for C2 or 3 to be possible on this sort of thing I'm guessing you get 2 options, lasso protruding rocks and tie them off instead of putting in nails except where there is no other option, or the dirt has to be soft enough to make the nails suspect right? or a combo of both.
Good luck on a free ascent legs, it would be a horror show I would guess, but maybe after you top roped the piss out of it.