You are floating down your favorite river when suddenly you hit a rock, lose your balance and over you go. You are in the water and so is all of your gear. The equipment you may need for your survival just floated away. Thankfully there is an inexpensive solution to this problem. You can build your own watertight compartment on your canoe so that your gear will be safe and you can concentrate on saving yourself in an emergency instead of chasing a pack that is floating away.
Plastic putty knife
Fiberglass resin and hardener
6 inch expandable plumbing cap
Enamel spray paint
Use scissors to cut the fiberglass cloth so that it fits from seat top to seat top in your canoe. Leave 2 inches of extra cloth on each side.
Mix the resin and hardener in the plastic bowl. Stir the mixture with your putty knife. Spread the resin on each seat of the canoe. Press the cloth into the wet resin. Spread resin on the sides of the canoe to hold the extra fabric to the sides sealing the top of your canoe cabinet. Pull your plastic putty knife across the cloth pressing it into the resin and removing any bumps under the fabric.
Cover the openings on each end of the seats with fabric. Mix and spread the resin, lay the cloth, and seal the sides. Smooth the fabric and let the resin dry for 3 hours.
Apply a ¼ inch thick coat of resin to the outside of all of the fiberglass cloth. Let the resin dry for 3 hours. Add a new coat of resin and let it cure for 3 hours to complete the structure of the cabinet.
Place the cap in the center of the top of the fiberglass box. Draw around the cap with the pencil and remove the cap. Drill a hole inside of the outline. Cut along the outline with your jigsaw. Sand the fiberglass box and the edge of the hole. Clean the dust with your wet vac.
Apply three coats of enamel spray paint to the fiberglass box. Let each coat of paint dry for one hour before the next application. Place the plumbing cap into the hole in our cabinet and twist the wing nut on the top of the cap to expand it and seal the hole of your canoe cabinet.
Safety glasses, rubber gloves and a dust mask are required when working with fiberglass.