Mast hole repair

The boat is about 45 minutes from my home, so I don't have easy access for measurements. The mast section supporting the "pontoons" is quite light . All stayed-up it is quite a flexible "springy" setup. I have not had a failure. No cracks, but the holes makes me nervous. They should not have been drilled in the first place, especially at the point of maximum foil width. If I could reinforce this area, I would enjoy the boat more.