I agree with a lot of what has already been said. If you clamp it to a flat board and heat treat it will likely only gain 5 pounds or so and that will be what you want if you dont have to do any extra tillering. More reflex heated in will equal more draw, 2 inches will probably raise the weight around 10 pounds or so. When I build a hickory bow I almost always heat treat them just because I live in a pretty humid area and I think it helps with moisture resistance, hickory is like a wet noodle when it gets moisture in it.