Nice job Don, I think one of those is in store for this boy here in the near future.
How much increase in performance to you notice with the bamboo backing? I love using Osage and I know that putting curves in your wood will add some zip to your tip, but if I could just get a little more speed to go along with the forgiveness I'd be completely happy. It just seems like I can build some real nice shooters, but they are way slow in my opinion. That's if I stick with the 10 gpp rule, which I think a person should with a selfbow so you don't over stress the limbs.