After turning the hull the first thing to do is reinforcing inside the hull. It means I have to finish the missing gluing between the hull surface and the stringers or the bulkheads. (I could not do it before the hull was upside down, now it is easy to finish.) See the next old post for illustration:

Joints between hull, stringers and bulkheads

The backbone must be reinforced with glass tape like the inside of transom and transom doubler. (Jun/July 2012)