Well, im trying to rise a bit in this Forum so i'll just post this, since i didnt find anything like this
Well, you do know that many people have Facebook or something like that nowadays.
Now lets say you've scammed a account, and you DO have the Email of the owner you've scammed. Now you want to get to the last name of the Owner, what do you do? You send him a invitation to facebook, he creates a account with his FULL name. After he created the account you can see his Profile under your Friendslist. There you just look for his 1st and last name and voila, you have the Last name
You could possibly try to get some more info about him if you get into a conversation with him. Ask him where he lives, if he has any Pets , what school he went to, such kind of questions wich can even get u the SA (If you dont have it yet)
I actually didnt try it myself yet since im new in scamming but ill let you know as soon as i have news on this
In the meanwhile you could possibly try it
Hope it helps you
Greets Dori