Hi, I've got hold of an old Novurania Poseidon inflatable approx 14-15 feet, which had been sitting in my friends garage for 10 years, it's in excellent condition the only issue I have is that the wooden keel on these boats come in two parts, I have the front piece but am missing the rear part, it should be quite easy to get one made but was wondering if anyone could supply the measurements? I just want to be spot on as I am planning to use it with my Mariner 40hp so dont want it falling apart when getting it to top speed