Thanks for the comments guys.
BigCountry, I just made me a form from a 2x10x18". I cut in my curve and left a notch at the top for the tip tip lie in. With the tip secured in the notch the rest of the bow was stuck out in the air. I had the form in a vise upright. When I started heating it it started bending on it's own and when it got close I helped it the rest of the way. I clamped it to the form and left it overnight then the next day I did the other one.
crosseye, I do sand the back as much as I think I can get away with without violating a ring. On this bow the rings are so thin I couldn't sand much so I fitted the overlays to the bow.