My dad recently acquired these soap containers and we decided they would be perfect if we did a little surgery. cut the top and bottom off according to the width you want the sled. then make a vertical cut to lay the plastic out in one sheet. always remember to wear safety glasses!
Step 2: Making the Frame
Make the frame just long enough to leave about 10 inches of plastic overhang on the front of the sled. Add cross pieces for support ( they make decent seats too). There were four people on here at once so i might add more cross supports. Counter sink screws in the side of the long 2x4s
Step 3: Attaching the Plastic containers
I had to stand on the plastic to keep it flat. Just put screws in about every 8 inches and dont forget the cross pieces.
Step 4: Adding a rope
I'm not sure if the rope adds any steering control but it sure does make a great handle. I used around 10 feet of rope.
So now you have a basic sled. Its flexible enough to take hills and dips well.