This is an old project that I made when I was in elementray school, and I took out most of the electronics to use in my other projects, so this howercraft is currently not working. In fact its body is in perfect shape. I made this from scratch by cutting 4mm plywood and painted it all to blue since blue is my favorite color.
I used a 12Volt vacuum motor(big black thing in the middle of the howercraft) that I took off from a broken vacuum cleaner, and mounted it in the center. It blows air under the howercraft with high pressure. I tried normal fan, in fact fan did not blowed air at high pressure. This special vacuum cleaner motor ensures the air is stuck under the howercraft and its skirts.
I put a large 12V RC model plane motor with a 8×4 inch propeller to move the howercraft forward. To steer the howercraft, I made 2 rudders and connected a servo to control them.
Skirts: I made the skirts using a blue IKEA bag. Although it worked, a softer cloth such as a spinnaker(type of sail) cloth would make it much more performant.