I don't know if I'm a shiny hunter, though I do enjoy catching and looking for them. :D Before X/Y, I had no luck with shinies, but now I can get pretty much any shiny I want, and it's awesome!
I've only actively hunted for a few shinies, which I keep for my team. I have a shiny Altaria and Audino. Believe it or not, I wanted both of those since I first saw their shiny forms. The fact that they're both getting Mega Evolutions in OR/AS is just icing on the cake. *w*
Oh, and the pride of my team, a shiny Charizard! Caught him as a Charmeleon in the Friend Safari.
I think my luckiest shiny was...well, actually, there are two. I was hunting for a shiny Growlithe in the Friend Safari for my niece. I took a break, and decided to go breed some of my Pokemon and hatch the eggs, then trade them on the GTS to help with my living dex. I hatch a few Turtwigs, some Joltiks, and then Growlithes...wait, why does this one look so light? Yup, turns out the third Growlithe egg hatched shiny.
The second, I had caught a Zebstrika, and put it in the Daycare real quick so I could get a Blitzle, again for my living dex. The egg hatches and...what the? Something looks off...sure enough, little red star on the status screen. I only had one egg! I actually had to go put Zebstrika back in the Daycare and hatch another one.
So yeah, I don't know if you can get much luckier than hatching a shiny on the first egg. XD I think that's up there with getting a shiny starter on the first try, or the first Pokemon you encounter being shiny.