H have a cheap rod given me by a recently decease friend. It has a foam grip, which I think is the worse of all materials for a grip. I was thinking of trying to make a grip from pine bark but noticed I have a pretty good supply of white oak falling into my yard. I picked up a 4" stack in a few minutes at lunch. Now what? I was thinking of cutting circles with my hole saws. Is there somewhere I can find guidance?