1) Measure a piece of plywood 3.3 feet wide by 5 feet long and cut along the measurements.
2) Round the corners of the plywood by cutting 6 inches off each corner. (shown below) (cut the red from the yellow)
3) Using the belt sander, sand the deck on both sides and the all edges.
4) Use the hole saw drill bit and cut a hole close to the edge of the wood but not too close so the blower is falling off the hovercraft and about in the center of the deck lengthwise, so the blower motor is sitting at the front of the deck pointing backwards.
5) Take the plastic sheet and lay it on the ground. Set the plywood deck on it and measure 1 foot everywhere around the deck. Cut any extra plastic off that you will not need.
6) Fold one side of the plastic over one edge of the deck either 1 inch or 1½ inches and staple it.
7) Pull the plastic tight and staple the other side of the deck, ends, and corners of the deck. Remember to put the staples about 1 ½ inches apart.
8) Flip the deck over, find and mark the center.
9) Sand the piece of plywood that is 7.6 inches wide and 29.6 inches long.
10) Place the plywood at the center of the deck.
11) Using the five 1½ inch screws, one in each corner and one in the middle and screw the plywood onto the deck.
12) Start by cutting eight 1½ inch holes in the plastic about 2 inches from the center board spaced out evenly around the center board.
13) Flip the hovercraft over to the top, if you have too long of screws and they stick out of the top of the deck, grind them off with the angle grinder.
14) Measure 2 inches from the front of the hovercraft and place the two pieces of plywood (shown below) in the center of the width, and glue them on using the carpenter’s glue.
15) Take the piece of plywood that is 4 inches wide by 14 inches long and glue it onto the foot brackets long-ways and on an angle. When the glue dries use the finishing nails to help secure it.
16) Now glue the backrest brackets on the hovercraft so your body weight is centered on the hovercraft about 4 inches apart.
17) Next glue the piece of plywood that is 10½ inches wide and 13 inches long onto the backrest brackets so the long-way is up.
18) Now, stick in the 90 degree curved pipe into the deck pointing forwards.
19) Stick the end of the leaf blower into the 90 degrees curve.
20) Mount the leaf blower bracket (shown below) where it will need to be placed in order to hold the leaf blower correctly.
21) Paint the hovercraft with your choice of color.
22) Now drill a 1/8 hole in close to the edge of the backrest bracket.
23) Set the blower in-between the backrest brackets
24) Push the thin wire through the holes, hook it around the handle, and then tighten the ends together to your preference.
25) Now take the piece of 3/4 inch rod and cut it exactly in half, which will make each piece 26 inches,
26) Grind the ends off so they are smooth.
27) Measure 10 inches from one end on each shaft and bend it at a 90 degrees angle, on both shafts.
28) Then measure 11 inches from the bent angle and bend it 90 degrees the opposite direction you bent the last angle.
29) Take the four brass brackets and mount the brake handles were you prefer them with the 1/2 inch screws (If you have too much space between the 3/4 inch shaft wrap the shrink tube around it and cover it with electrical tape)
30) Wrap some hockey tape at the 5 inch end and make a tape knob. At the other end make a grip to hold your hand on.
31) Find some smooth cement and measure 26 feet.
32) Time how long it takes you to go 26 feet with the hovercraft. Record your results for 3 trials with the same size of hole.
33) Repeat this process cutting the holes 1/2 inch bigger every 3 trials.