You will eliminate the holes but the finish will be damaged on the wood unfortunately
I don't know whether you can buy the base component separately. I love my hook and have had no problems with it falling off the porcelain tile. You Tube has a installation video with the directions so you can see exactly how the hook is to be installed. Since the installation about 6 weeks ago, I have had no problems. Be certain to use the alcohol wipe to clean the surface and wait an hour for it to dry before gluing down the hook. I waited a little longer than necessary for the glue to dry. Just be sure to let the glue cure before adding weight to the hook. Good luck!
You Tube has a installation video that shows not only installation, but removal. My hook is on porcelain tile and I have not removed one.