I watched this again on my flight the other day (I love seeing people's reactions when they glance over confusingly at what I'm watching.). This is a film I've watched a million times. And each time the bad editing of the stock footage becomes more and more apparent. The lack of effort towards the end of the movie in this regard is especially jarring. At least earlier in the film, they make an attempt to tint some of the old footage to make it look more nighttime-ish. If they knew they were going to use all this stock footage, why not shoot the new footage with day light instead of forcing a night battle that they couldn't accomplish? .
The one use of stock footage I did enjoy, if only for its pure silliness, is the reuse of the same "flip ghidorah over my shoulder shot". They use this same affect in Megalon with the karate kick, and the humor is never lost on me.
IDK, there are so many things wrong with this movie, and they become more and more obvious to me as I age, but I can't help but love the characters, as cheesy as they are. Its a top Godzilla flick for me, maybe call it a guilty pleasure?