As a retirement project, I have just started a complete teardown and rebuild of a 1980 Trillium
Jubilee. It spent many happy years in a field, home to several generations of birds, vermin, and insects. I've cleared out the interior, nothing could be saved, but that's OK. I'm wondering what holds down the plywood floor. I can't find any fasteners other than the carriage bolts to the frame. I need to replace at least part of it due to rot. Any help greatly appreciated.