How to install a swivel plate and boat seat in an old Lund | Cottage Tips
Amazon.com : MATINA Boat Seat Base, 7" x 7" Aluminum Boat Seat Pedestal & Base with 3/4" Pin Post Socket, Heavy Duty Boat Accessories for Boat Seat Post & Boat Seat Mount
Amazon.com : MATINA Boat Seat Base, 7" x 7" Aluminum Boat Seat Pedestal & Base with 3/4" Pin Post Socket, Heavy Duty Boat Accessories for Boat Seat Post & Boat Seat Mount