Hawkdancer,,,I usually fill the hole with fine saw dust from the wood I am working with and pack it in. Then I use a very thin superglue. I have been using Loctite 420. It works extremely well.
Eric,,,the superglue is definitely an option. I thought about it as soon as I saw the hole. It is small and since the limbs are not starting to bend, I am going to take it down a little further and see what happens.
Thanks guys for all the positive feedback on my project. I am not sure what the final decision, fill or not fill, will be just yet. When Brad and I talked about doing this, I usually don't post my projects, I wanted to do this from the stand point of a new bowyer that does not have a lot of money to spend on staves that are perfect. I should be able to get a bow out of this stave and I will be sharing all the problems I come across as we go along. There are plenty of good posts on here where individuals can learn the proper technique to make a bow from a clean stave. But I have not seen too many posts that go through the process of making a bow from what some would consider a scrape piece of wood. I want to encourage guys to try bow building even if the bow doesn't come out pretty, or a great shooter. I learn something from every bow I make. To me, not trying means your not willing to fail.
So here we go. Marching forward determine to get a bow that shoots.