If by visa run you mean go to the embassy in a neighbouring country to collect the DTV then maybe. But if you mean just border bounce then no, it can't be done
i ask as I work for a company who does company registration in Thailand and many non Americans ask about Amity. How could I know, I just read to post which didn't mention it.
Second shareholder can be anyone, doesn't need to be American, but 51% of the shares need to be held by an American.