It depends how invested I am in the fighter. If its a Pacman,Izzy,Gamboa or a Cunningham fight, its really hard for me to keep a scorecard at first watch because im too caught up in the excitement if its an exciting fight. It goes the same for all mega fights, except for RJJ/Calzaghe.
I keep a card if I'm watching it by myself and its a somewhat big fight. If I'm drinking with friends I watch it again later.
Nopes only big fights. Some times I stop scoring even big fights . . . when I see one fighter already being beaten up to pulp.
Same for me. I'm far too excited, caught up in what's going on, screaming at the TV, ect, for proper scoring on a first viewing. I take it all in, fully, then go back and focus entirely on scoring in a purely clinical-scientific way. It's beyond me how anyone could get a genuinely accurate scorecard on the first time out, unless they're the strictest of dispassionate fans who don't care for either fighter involved, and alternate viewing both combatants at all times and the target field in that space right between them. Most fans have their eyes locked on their favorite guy the whole time - HTF can you get any kind of scorecard doing that?? You can't.
I never take it too seriously. obviously a fighter wins the round and a general opinion is made at the end of the fight. I can't remember many times a serious analysis was recorded. When watching amateur fights, i disagree with the winners a lot more. It seems as though real punches arn't counted anywhere near enough to make it a fair system. It does promote a healthy sport of skill though.
If you are watching a fight for enjoyment, you can't score it accurately. To properly score a fight you need to watch it like a judge (should): analytically, unbiasly, without getting caught up in the excitement. In other words: no.
I always score the fight as I'm watching it, usually just in my head and at the final bell I have a count of how many rounds I've gave each fighter but not remember exactly which rounds I gave to each. When it gets late in a fight I prefer to have some idea which fighter needs to win the round. If one fighter starts to totally run away with it (e.g. Abraham-Oral with all the KD'S for AA,) then I won't bother scoring the latter rounds but if the fight is competative then I will.
I always find myself unable to score a fight on first viewing. I just watch for pure enjoyment and if it was a close fight, i'll rewatch the fight the next day or so on MUTE. I watched JMM/Pacquiao 2 a 2nd and 3rd time and I think JMM won that fight. And i'm a huge Pacman fan as well as JMM.