This reg has nothing to do with one day or two day limit. It's a possession limit, meaning while your away from place of residence, every licensed angler can have only 2 fish in their possession and one must be...... So if you head home on friday with a 25lb fish, process and put it in your freezer, you can go out on saturday and catch whatever size you want.
Now, with that said, I would prefer they found a way to extend the season with a limit of pounds per year each angler was allowed. I have not given alot of thought to how they would implement and enforce this, but my opinion is that any licensed angler only needs about 60-80 lb's of halibut a year. I guess if you hooked up your friends, family, and neighbors with fish, then that may not last the year. But that might be something that we want to discourage with a limited resource. I know personally if I had 50 lb's of halibut in my freezer or flopping around on the deck of my boat, I wouldn't be trying to catch more. I am of the mindset to leave some for the next guy. But I might also be saying this because I haven't had luck catching halibut and when I see guys bringing in fish 2 weekends in a row, it's just salt in the wound.