Heya! I got your message! That's awesome! I haven't checked the thread yet, but I'm about to.
And yeah, Cocoa's right. It's all down to luck, but again, it doesn't hurt to shake things up a little sometimes. Of course, it's harder to reset your game for a different ID when you're much further into a game and want to SR for something like Virizion or Ho-oh, for example, so I wouldn't really suggest doing that for anything other than a shiny.
I also think it's a mental thing, too. Like, switching IDs can make you sort of feel a little refreshed ... or it does for me sometimes. I don't know if it makes sense or not, but sometimes you feel so drained SRing that doing anything else, like changing your ID, for instance, feels like it might help in being successful.
Anyway, good luck with your next hunt, whatever it may be!