This is the basic overview of how the hovercraft goes together.

Step 1:

Cut out big circle. We used plywood, but anything strong enough to hold you will work. Try not to get it too heavy.

Bonus:

We used the plastic attachment that came with the Leafblower "bagger". We cut off the bag part and just used the attachment.

You can use a hot glue gun to seal it up.  This makes for a quick and easy attach/ detachment of the leaf blower. 

Step 3:

Cut put the Plastic sheeting (you can also use a plastic shower curtain).

Step 4:

LOTS OF DUCT TAPE!! attach the Plastic really well to the wood.

Bonus:

We used foam pipe insulation as a bumper around the disc. Worked out real nice!