Hey guys...new stringers going in a lightweight layup Southwind. No problem with the project itself, but have a question. Got some perfect clear pine here for the project. What types of wood do you guys recommend or use. Second...a yacht builder said he donate CORE-CELL material he uses for stringers in his yachts. Super light weight, super rigid once glassed in. Never heard of performance boats using it. All the local yacht companys use it, it expensive, I know that! It's free, will it work?