If you are thinking of adding a few more seats to your watercraft for your family and friends to sit, I will share with you a DIY project about building a bench seat on your boat. Building boat seats is a straightforward process you can further simplify by measuring your watercraft’s inside dimensions, particularly its width. You can use wooden material which can give your boat a more rustic and natural elegance. If you install a U-shaped bench seat at your boat’s stern, it would be best to assemble the bench first before mounting it into your watercraft.