Unfortunatly, the process to cut a yew tree legally is lengthy. I cut mine on the Mount Hood National Forest. First you have to find a location of the yew trees, then you have to submit the location. They will approve the location, then you can cut the tree. Currently they will not approve any location because the guy who is doing it, Travis, can not get up to the locations due to snow.
as far as other bow woods, there is miles of juniper to choose from. Although, looking for a good stave in juniper is liking looking for a needle, in a stack of needles. When you find one, there are usually a bunch tho. Up Juniper Canyon road out of Prineville towards Prineville reservoir, there are lots of straight clear juniper. When I cut on BLM land, I still request a permit. They emailed me back telling me I had permission to cut, and the email was my permit.
There is also lots of Vine Maple once you get out into the Cascades.
Hope this helps a little.
Eric