For a low cost alternative, we built our sail box from wood. It has served our two Cat's and all their sails, booms, rudders, and all sailing gear for over 25 years. Only maintenance is exterior gloss white paint every couple of years.

Top lid and box bottom are 1/2 in exterior plywood. Sides and ends are 1 by 12 wood. Top is 25 in wide, with 1 by 2 framing. Bottom is 23 in wide to allow construction from single 4 by 10 sheet of plywood. Box is braced at end, and where it bolts to trailer with 2 by 2's. All screws and nails are galvanized. Galvanized bolts connect box to trailer frame. Box is heavier than factory boxes, but the price is right

Box lid provides excellent work area. It is also strong enough to stand on while rigging the boat. Lock system is cable locks through holes in top and box at both ends.

Caleb Tarleton