Last week we started gluing in the forward bulkheads on a Core Sound 20 Mark 3 and after previous experience with Graham's Core Sound 17 Mark 3 I decided to try using temporary gunwales to keep the top edges of the side panels fair so that the forward bulkheads could be fiberglassed to the hull. The gunwales were made of 3/4" square pine stock and clamped in place. Drywall screws temporarily fastened the tops of the bulkheads to the side panel and the gunwales kept the edge of the panel from bowing outward.
