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This project comes from an 1950 edition of Boat Builder's Annual and can be found by googling CORKY. Im not posting the plans but this is more of a build ibble and some suggested modifications.
The second picture was from the Brimfeild Flee Market the dealer wasn't shure what he had but was selling it for $40.00 and would let it go for $30 because I told him what is was.
The wood was free the paint leftover oops paint $5, box of wood screws $5, tarp $10 Poles $.44 and I found some shower curtain rings a tennant left in the basement and made two boats The inter tubes were $7 and $8 from a local guy that sells them on the side of the road. Total for two boats about $38.
The second picture was from the Brimfeild Flee Market the dealer wasn't shure what he had but was selling it for $40.00 and would let it go for $30 because I told him what is was.
The wood was free the paint leftover oops paint $5, box of wood screws $5, tarp $10 Poles $.44 and I found some shower curtain rings a tennant left in the basement and made two boats The inter tubes were $7 and $8 from a local guy that sells them on the side of the road. Total for two boats about $38.
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Signing UpStep 1Cutting the wood
I had several pieces of cabinet grade 3/4 plywood that was about 6 inches wide and five feet long. I first cut 2 pecies per boat eight inches long. I figured out the bow(stern) point by finding the center on the 6inch side(top), then measuring up one inch from the bottom on the sides and placing a piece of 3/4 material on those points and drew a line on the oppsite side. This is also the measurement for the width of the side walls (4 per boat) I also cut a bevel about 15 deg to line up with the bow. The height of the sides depends on the intertubes used mine were about 7" for one and 9" for the other. After they were cut I rounded the bottoms on a scroll saw and drilled counter sunk holes(pic 2) for some #8 wood screws
On two additional five foot boards at one end I lined up the one of the points I cut and traced it, drilled more holes using the piece as a template (I then screwed the sides on them and placed the intertube on the board to line up where the stern should be.
On two additional five foot boards at one end I lined up the one of the points I cut and traced it, drilled more holes using the piece as a template (I then screwed the sides on them and placed the intertube on the board to line up where the stern should be.
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![Fun & easy sailboat [Protei 009.1]](http://img.instructables.com/files/deriv/F3E/MYWG/GYKQ5G8K/F3EMYWGGYKQ5G8K.SQUARE.jpg)
My first thought is that the drag of pushing the inner tube through the water is pretty bad, so I was thinking you could bend the inner tube so the front and rear end are lifted up and the sides are pushed down, so the tube is formed into a short catamaran. The way to accomplish this is to have two sturdy poles (broomsticks or larger) arranged in a cross, with the bottom pole running lengthwise under the tube and the top pole running crosswise over the top, and the two secured together with rope, or possibly even just weaving the top pole under the bottom one.
My other unrelated idea is to create a bottom for the boat (to give it more floatation and sit higher in the water) by cutting a plywood circle that fits under the tube, so the plywood straddles the lowest part of the tube. When the plywood is secured with duct tape, and a giant shower cap with a drawstring to fit over the tube and plywood keeps the water on the outside.
It may be that both of these are too much trouble to make for a small improvement, but I thought you might find them amusing.