Yep, they're Method 1. I've abused Raikou, and then I did the roaming Latios. It's pretty simple: Save one step before you release them. Raikou starts on frame 1 and Entei on 6 (Unless you're on an Eu game, then it's flip flopped). So hit your seed, and advance to your target frame (Either that, or advance to 1 before. I'm pretty sure you should go to your target frame, though), then step forward and release them and you should get the right results. For example, my target was frame 41, and I wanted Raikou. So I advanced 40 times to land on frame 41, and stepped forward and got the right results. If my target was Entei, I would advance to frame 35.
Before you save, make sure you did it correctly by master balling it. Hope this helps :D