Im thinking no more than youd have to buy, I wonder if you could use Trex instead of wood. Carpet it, and it wont ever rot. Trex is expensive but, you dont need that much & youll only have to buy it once. So over time, if you keep a boat a long time, it would pay off. Just something to think about.13 PIV w/ 200 MercIG: WarriorRiverCustomRods