Like Eric, I have gotten extremely good with a heat gun (thanks to Gary Davis and MoJam) and been able to do wonders with some of the wood I have. The things that have stretched my limited supply are a good band saw and jointer. The bandsaw lets me get more bows out of each log or stave by cutting them into thin pieces, after chasing a growth ring and then laminating/gluing a handle on. It also allows, when used with the jointer, me to easily flatten short billets and pieces, finger joint them together, and then laminated/glue a handle on. The method I use for most of these “junk wood” bows, as I have come to call them, is shown in detail in Dean Torges video, Hunting the Bamboo Backed bow, which I highly recommend to all wood bowyers. The main difference between my method and his is if I have them to a single growth ring I don’t always back them.