I would say Hanr3 is right. With stuff like this (laws, code, regulations, etc) those inforcing it read the black and white of the text only, there is no gray area. Just from the words written, if youre in a tournament ALL fish must be released back into the water they were caught in IMMEDIATELY agter weigh in. It says nothing about keeping anything towards your daily bag limit.

I read it as there is no keeping fish caught during a tournament.