@James *******
you can appeal ANY decision for denial of entry
AND
everyone so far that's been denied because an officer told them they spent too much time in thailand was denied entry for no proof of funds (even the people that showed they had 20K baht) and that's because there is NO clause that allows you to be denied entry into thailand based on previous entry history or time in country..
I wish people would know what the rules are, would hold their ground and not get pushed around by an immigration officer trying to throw their weight around.
If they want to limit the amount of time foreigners can spend here on visa exempt or tourist visa entries they need to pass a regulation, not just make one up on the fly..:/