I think I have to change the way I measure my fish. It's just my opinion but if that first fish was one I caught I would measure it with the 2 tail end points at the same number. Wherever they both get to the same number in a straight line up and down.
I would probably call that a 64cm and let it go if it was me. Don't get me wrong, if it legal to push the tail down in an unnatural position like that then there is nothing wrong with what you have done but it's not how I take my measurements.
Does anyone know if an inspector put that fish on their measuring device, would they call it legal? Just want to know for myself next time I get one like that.
Good effort anyway from land based.