Hi! I have a 1960 Folkboat that sinks every spring when we launch it. It has so many gaps and dries out every winter. In addition there are 6 ribs that need replacing and some wekness by the mast foot. I was wondering whether sheathing would be an idea? I know that it may be frowned upon, but the alternative is a major re-planking. If sheathing is viable, then can anyone recommend any books on the subject? I have several questions already such as, Would sheathing sort out the structural problems (e.g. the cracked ribs) or would these need to be fixed anyway?