Quoted By:
Ill share my experience OP. Usually it just starts with a 2 IV ditto for me that I got from a friend safari (to make it easier of course). Then you can either browse /vp/ for a bit and see if any threads come up that bros are willing to give away 2 iv leftover pokemon. (or breed them yourself)
For example: I have a ditto with 31 IV's in HP SP. ATTK and speed. I managed to breed a random houndoom I caught with this ditto (i made the ditto hold destiny knot and the houndour an everstone) until I got a houndour with IV's in SP. attack and speed.
I then took out the first houndour and started to breed the new houndour with the ditto. This one took sometime until I got a 3 IV Houndour with HP, SP attack, and speed.
It really is just a matter of trial and error. I find it easier to make the ditto hold the destiny knot and the other poke the everstone.