Thanks for the measurements and advice, I have already started construction if the plug but I am still considering some changes to the wings, etc. I have changed the design quite a bit and here are some pics of the newer one. The current foils are not the actual ones that I have designed. Do you think the wing is still a bit far forward or should this do also does the mast stump look a bit too far back? I do know how I am going to attach the wings, prod, etc but I am just a beginner at CAD so I thought there wouldn't really be any point in adding in the details. Also would it be possible to make a sail or would it be better to buy one. Thanks