Interesting this method, I use, the construction based on the sections and on the lines of the profiles, this approach is suitable for the new models, Thanks for sharing your method, I also prefer the old models, and I have made many hulls, but with the subdivision surfaces and which I then rework with Moi3D. 
for example this model is made in this way.






here some model on grabcad https://grabcad.com/pa.furijaz-1/models

Greetings