@Mike *******
I wouldn't recommend border run/ bounce at the moment, they are really strict on it now, a couple of days ago I did this and the immigration officers at the airport wouldn't allow me and my family in Thailand without proof of a flight back home, we had to wait about an hour and a half after our flight to try and sort it out with the immigration and even after that they weren't happy at all, I would recommend getting a visa if you want to stay longer, that is what we are currently doing, its really not worth the risk