Some things to think about
Obstacles to dating good Thai girls:
They work ALOT. Most work 6 days a week and not only will you be competing against other dudes, you'll be competing for their spare time, which they'll often want to spend with their friends and family or they'll simply be too tired to go out.
Many not speak good Engrish! I've met a few hot live ones and their English was terrible and it became too awkward and frustrating. So learn your thai guy! Haha.
The better looking girls get tons of messages on these sites. I saw my Gik's mailbox on her Tagged account and there was maybe 30 messages in one day. Probably more. She simply deleted all of them. You want to stand out, you better be quite a compelling character.
MANY, especially the smoking hot party girls you see at RCA / Siam Square / Thong lo have NO intention of meeting falang dudes! You might get a nibble here and there, its not out of the realm of possibility, but they're generally bored or prefer to meet Thai dudes.
Some have no intention of finding a boyfriend on these sites and only want to improve their Engrish. Perhaps you could lure one of them into the friendly confines of your house, but more often than not, it's just a dead end.
Some good girls not really good girls! If her schedule is wide open, chances are she's not such a good girl!
It takes time and effort to get quality girls. Sure any Joe Blow or overweight English teacher can get a 35+ year old with horrible stretch marks. 3 kids, a previous Thai husband who did nothing but beat her and drink whiskey all day, and saggy tits to make a quick rendevous. Not much demand for them!
Thai girls are generally shy, especially if they haven't been around too many falang. I was working on one gal from Thai Friendly, a 26 year old cute thai / Chinese mix, goes to RCA often, while she's interested to hook up, she's somewhat of an airhead, and very shy to meet.
Girls that are too eager to meet right away are desperate and almost never hot. No girl worth her salt will meet right away.