I keep hearing rumours and whispers on this and wonder if it would work, so your in some country and you get your shiny new Single Entry Thai non immigrant visa, this has to be used within 90 days and you will be allowed to stay in Thailand without having to do anything immigration wise for 90 days, so lets say the day your new visa is issued is also the day you arrive back in Thailand, after 60 days you go to your local immigration office and get a re entry stamp for 1,900baht as you would do if you were on a yearly visa and wanted a holiday, after 80 days you leave the country but re enter before the 90 days expiry on utilization of your visa, in theory you would get another 90 days, would that happen in practise though?