A year ago you could find fight videos on sites like mma-core, pancrase, etc. and tape study fights before events.
However, now it seems like it's pretty much impossible. All these sites seem to use the same 2-3 video hosts as each other and so the videos get taken down pretty quickly. I haven't been able to find a working fight video in months. Only option seems like it would be torrent them (which is a lot of data), and you still wouldn't be able to get every fight since it'd be hard to find torrents for the facebook prelims.
So is there something I'm missing? The idea of making bets on fights off of pure memory of fighters doesn't seem like a reliable strategy. You can only remember so much, and there are too many fighters and too many fights. Not to mention you can't remember the little nuances that could sway your feeling of a bet one way or the other.