Step 1: Remove old wood
This is also a good chance to scrub all the old dirt and grime off the hull.
Step 2: Build gunwales
Step 3: Cut replacement seats and thwarts to proper length
Waterproof all the new wood with a sealant like Watco.
Step 4: Attach the gunwales (1)
Step 5: Attach the gunwales (2)
With both inner and gunwales securely attached, trim ends.