Dragonman,
I have yet to see yew I can't put a fingernail into.....when you find some you can't, send it my way......As far as shoots they can make fine bows. If you cut a tree trunk it may have wide rings, but the very opposite may be true of limbs. Tree limbs will generally in my expirience have a lot tighter rings (infact) to someone that did not know yew that well, it will fool them as being "good" yew.
Native americans quite regularly used limb splits off of trees, they also used splits from the trunk.....but they did not kill the tree.
Brian