Superb! Aluminium, I presume? (as in "you are not Dutch"
Sorry. To make it easy I did use galvanized 0,9 sheet. So I think it will not last very long in salt water. But I have plans on copy it with laminated epoxi later. At least it acts as I wanted in the water and is not very unstable but with a little higher resistance in the water. This so I am able to have sail to help me keep up the speed without empty my muscles.
Also I made two of them. One for me and one for our next oldest boy.
Thanks a lot.