Simon, That looks like a fun yew stave to me. If nothing else, you will learn bundles from it. Just take your time, don't get frustrated and put it down when you do. Will you post a pic of the complete stave? Pat
ps. Super glue is a godsend! In the checks(or shakes) in the belly go in sessions. If you try to fill each all at once the glue doesn't cure well. I'll add some glue and let it set before adding more. Do this as you reduce the belly. If the voids are severe, I use fine sawdust as a filler along with the super glue. Having a fine needle handy helps get rid of air bubbles in the glue down in the cracks. They are bad!