Either one or three, depending on how we are scoring this. Had a 76" osage ELB that had a big through and through knot midway through the top limb. I tillered it to 65# at 24" (going for 30") and the the back fractured halfway between the tip and the knot. So I say never say die and piked it down to 62" for a shorter, flatter bow (kept the knot). Same problem: back fracture between the knot and string nock, but I got it to 26" this time. I am nothing if not persistent (and H. Sapien is a tool-user, dammit), so I piked again to 52" and made a light holmegaard kind of thing. This time I tillered it clear to 40# at 27" and it spit out about 10 arrows when the limb let go again between the handle and the knot. (I know, I was pushing the limits, but I can't help myself)
So is that one or three bows? Do I get extra credit, professor?