Lately people have been asking more and more about special encounters.
Get this into your head,there is no way to increase or decrease your chance of getting one.
There is no magical perk,GMs don't give them out,there is no super encounter finding build with 10lk and 10pe.There is no area tied to the encounter.
Stop wasting your time.The developers already said it's completely random,only real life luck is involved.