That is a true bummer, sorry to hear it.
As an FYI, the stringers in your boat are not foam filled. They are cored with a 'wood composite' made by Baltek that, at the core, is balsa wood.
As an FYI, the stringers in your boat are not foam filled. They are cored with a 'wood composite' made by Baltek that, at the core, is balsa wood.

