I'm also consider doing the Baht Run. Thai airways website shows it currently has "Discover Thailand Amazing Fares". US $210 include tax for 3 coupons valid for any Thai domestic destination. You can add up to a max of 5 coupons for US$59 each.
The questions I have are :
1. To get 1P, or 1K, does UA use the miles or segments concept?
2. Am I correct to assume that you get the actual miles (no minimum) flown?
3. Is the Discover Thailand Amazing fares a good deal for a Baht run?