yes I work green staves,, sometimes I dont have a green stave and work seasoned wood,, either is ok for me,,, if I want to heat reflex into a seasoned stave,, I usually tiller it backwards and heat the belly till it holds the shape I want,, and think a form would give more consistent results or quicker results, but I enjoy heating the reflex in like that,also when the bow is tillered even backwards, the taper is pretty even when you start to tiller the bow,, ,, I also think heat treating the belly can add to the woods performance in some woods,, as it does change the structure of the belly wood in a good way,, when done correctly