If someone claims that they've done this before I'll take some convincing.
I couldn't figure out if Mono Bulge was the left or the right line, and it has never been clean enough to figure out, without alot of work when I've been there. I assumed the slab/ plinth at the bottom was in, given that it is described as a sitter.
He says he did the left arete of Boyager with a big leap for the jug, sometime in 2000. He thought 7b/+ at the time.He also did a couple of other problems on a steep boulder near there. One going up left and one up right. He can't remember the grades, but they might be 7's.