What sail is best for this raft?

I'm been thinking about building myself a raft. the tricky part is that the raft shuld have a sail. I have made a drawing of the raft using Google SketchUp. what is not shown in the drawing are some barrels and ballast.

the raft shall be 23 feet long and 16 feet wide and have a small house on it 8.2 feet long and 13 feet wide. its this big becouse we are four who are going to use it.

Now, the question. how should I build the sail?
i added the drawing so you can take a look if you like.

sorry about the grammar and/or spelling

raft.skb331 KB
raft.skp336 KB
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Judging by your sketchup drawings, you are going to need a mast that is much taller. I would also recomend putting farther forward. You will need a rudder too.

But, a flatbottom raft might not be very efficient for sailing. And it would be a b*tch if it capsized
Kiteman7 years ago
For those of us who do not use SketchUp, could you post a screenshot or other "standard" image?

Ungerbla (author)  Kiteman7 years ago
OK, now we need to know what kind of waters you will be going on, and in what weathers.

Ungerbla (author)  Kiteman7 years ago
its swedens biggest lake. and we are planing on sailing with the raft in the summer so we hope its good weather but we cant be sure.
in the middle there is a lake calld "vänern" thats where il be sailing