I have tried half-heartedly to straighten thicker pieces of wood (with both heat gun and steam) and have come to the conclusion that it's a lot better to reduce them first. To do it properley, you need a seriously heavy duty clamp/jig setup. Having said that, I am looking forward to learning something new from the more experienced guys on this topic.
You could also just call them Select Character Staves for the Advanced Bowyer and sell them for more money!